2023 in arthropod paleontology
2023 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, trilobites, and other arthropods (except insects, which have their own list) that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2023.
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Chelicerates
[edit]Arachnids
[edit]Araneae
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Dunlop |
Carboniferous (Moscovian) |
Osnabrück Formation |
A spider belonging to the family Arthrolycosidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Anapidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Zarqaraneidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Zarqaraneidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Tetrablemmidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Cybaeidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Cybaeidae. |
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|
Sp. nov |
Peng et al. |
Cretaceous |
Burmese amber |
A spider belonging to the family Archaeidae. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A nursery web spider. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Rovno amber |
A nursery web spider. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider, probably a member of the family Zarqaraneidae. The type species is G. furcula. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Insecutoridae. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Insecutoridae. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Tetrablemmidae. The type species is K. constrictum. |
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|
Gen. et sp. nov |
Valid |
McCurry, Frese & Raven |
Miocene |
McGraths Flat site |
A spider belonging to the family Barychelidae. The type species is M. mccluskyi. |
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| ||
|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider, possibly a member of the family Mysmenidae. The type species is M. grandipalpus. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A symphytognathidan Araneoidea spider |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Uloboridae. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Linyphiidae. The type species is P. paracymbium. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Uloboridae. The type species is P. pectunculus. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Megasetidae. The type species is P. araneoides. |
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|
Gen. et sp. nov |
Tang, Engel & Yang in Tang et al. |
Cretaceous |
Burmese amber |
A spider belonging to the family Macrothelidae. The type species is P. polyacantha. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Cybaeidae. The type species is S. brevitricha. |
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|
Sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A species of Scytodes spitting spider. |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Liocranidae. The types species is S. curvitibia. |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
A spider belonging to the family Protoaraneoididae. |
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|
Gen. et 2 sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Cybaeidae. The type species is S. lingua; genus might also include S? adcoccinoidea. |
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|
Gen. et sp. nov |
Valid |
Wunderlich |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A spider belonging to the family Agelenidae. The type species is U. sinemammillae. |
Araneae research
[edit]- The first known male specimen of Strotarchus paradoxus is described from the Miocene Mexican amber by García-Villafuerte & Ibarra-Núñez (2023).[7]
- A study on the phylogenetic relationships of extant and fossil members of Palpimanoidea is published by Wood & Wunderlich (2023), who interpret their findings as indicative of closer relationships of palpimanoids from the Cretaceous amber from Myanmar with the Gondwanan taxa, and indicative of dispersal of Gondwanan lineages through the Burma Terrane into the Holarctic in the Cretaceous.[8]
- Richardson, McCurry & Frese (2023) describe fossil material of a member of the genus Simaetha from the Miocene of Australia, interpreted as consistent with the molecular-based studies indicating that the radiation of the astioid jumping spiders at the Oligocene/Miocene transition happened in Australasia.[9]
Chimerarachnida
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
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|
Sp. nov |
Valid |
Wunderlich |
Cretaceous |
Burmese amber |
Ixodida
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A hard tick. Announced in 2022; the final article version was published in 2023. |
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|
Sp. nov |
Valid |
Chitimia-Dobler, Mans & Dunlop in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A hard tick. Announced in 2022; the final article version was published in 2023. |
Ixodida research
[edit]- New specimens of Compluriscutula vetulum, providing new information on the morphology of this tick, are described from the Cretaceous amber from Myanmar by Chitimia-Dobler et al. (2023).[11]
Mesostigmata
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Lindquist & Vorontsov |
Eocene |
Baltic amber |
A mesostigmataan mite, a species of Uropodella. |
Opiliones
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et 2 sp. nov |
Valid |
Bartel, Dunlop & Giribet |
Cretaceous |
Burmese amber |
A member of Opiliones belonging to the group Cyphophthalmi. Genus includes F. cretaceus and F. parvus. |
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|
Sp. nov |
Valid |
Bartel, Dunlop & Giribet |
Cretaceous |
Burmese amber |
A member of Opiliones belonging to the family Stylocellidae. |
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|
Gen. et sp. nov |
Valid |
Bartel, Dunlop & Giribet |
Cretaceous |
Burmese amber |
A member of Opiliones belonging to the group Cyphophthalmi. Genus includes M. oblongus. |
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|
Gen. et sp. nov |
Valid |
Bartel, Dunlop & Giribet |
Cretaceous |
Burmese amber |
A cyphophthalmine Opiliones |
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|
Gen. et sp. nov |
Valid |
Bartel & Dunlop |
Cretaceous |
Burmese amber |
A eupnoid harvestman. The type species is T. aculeus. |
Oribatida
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Arillo, Subías & Huang |
Cretaceous |
Burmese amber |
A mite belonging to the family Achipteriidae. |
Pseudoscorpions
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Novák et al. |
Ajka Coal Formation |
A pseudoscorpion belonging to the family Garypinidae. The type species is A. stephani. |
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|
Gen. et 2 sp. nov |
Valid |
Stanczak et al. |
Eocene |
A pseudoscorpion belonging to the family Garypinidae. |
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|
Sp. nov |
Turbanov et al. |
Eocene |
Rovno amber |
A pseudoscorpion, a species of Chthonius. |
Sarcoptiformes
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Kolesnikov et al. |
Eocene |
Rovno amber |
A mite belonging to the family Hemisarcoptidae |
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|
Sp. nov |
Agnihotri et al. |
Eocene |
A sarcoptid mite. |
Scorpiones
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Lourenço in Lourenço & Velten |
Cretaceous |
Burmese amber |
A scorpion belonging to the family Palaeoeuscorpiidae. |
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|
Sp. nov |
Valid |
Xuan, Cai & Huang |
Cretaceous |
Burmese amber |
A scorpion belonging to the family Palaeoburmesebuthidae. |
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|
Sp. nov |
Valid |
Xuan, Cai & Huang |
Cretaceous |
Burmese amber |
A scorpion belonging to the family Palaeoburmesebuthidae. |
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|
Sp. nov |
Valid |
Lourenço in Lourenço & Velten |
Cretaceous |
Burmese amber |
A scorpion belonging to the superfamily Buthoidea. |
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|
Sp. nov |
Xuan et al. |
Cretaceous |
Burmese amber |
A scorpion belonging to the family Protoischnuridae. |
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|
Sp. nov |
Valid |
Viaretti, Bindellini & Dal Sasso |
Middle Triassic |
A scorpion belonging to the superfamily Buthoidea and the family Protobuthidae. |
Scorpiones research
[edit]- Dunlop & Garwood (2023) reevaluate purported Paleozoic scorpion taxa Palaeophonus arctus and Palaeophonus lightbodyi, considering them both to be nomina dubia, and consider the genus Allopalaeophonus to be a junior synonym of the genus Palaeophonus.[26]
- The oldest pectinal tooth of a scorpion reported to date, preserved with small projections in sockets consistent with the peg sensilla of extant scorpions, is described from the Devonian (Emsian) strata in Scotland (United Kingdom) by Dunlop et al. (2023).[27]
Solifugae
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Valid |
Dunlop, Erdek & Bartel |
Eocene (Lutetian) |
Baltic amber |
Europe (Baltic Sea region, ?Russia) |
A camel spider. The type species is E. fahrenheitiana. |
Trigonotarbida
[edit]Trigonotarbida research
[edit]- A trigonotarbid arachnid specimen is described from the Carboniferous (Moscovian) Almazna Formation (Donetsk Oblast) by Dunlop & Dernov (2023), extending known distribution of trigonotarbids in Europe.[29]
Trombidiformes
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Valid |
Khaustov, Vorontsov & Lindquist |
Cretaceous (Albian–Cenomanian) |
Taimyr amber |
A mite belonging to the new family Unguicheylidae, which might belong to the superfamily Anystoidea. The type species is U. quadriocellatus. |
Uropygi
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Zhou et al. |
Late Cretaceous (Cenomanian) |
Burmese amber |
A member of Uropygi belonging to the family Thelyphonidae. The type species is C. kachinus. |
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|
Gen. et sp. nov |
Knecht et al. |
Carboniferous (Moscovian) |
Rhode Island Formation |
A whip scorpion. The type species is P. bryantae. |
Uropygi research
[edit]- A study on the anatomy and affinities of Geralinura brittanica and Proschizomus petrunkevitchi is published by Garwood & Dunlop (2023), who reinterpret P. petrunkevitchi as a whip scorpion rather than a stem-schizomid.[33]
- Probable new specimen of Mesoproctus rowlandi, representing the first fossil whip scorpion specimen preserved with book lungs, is described from the Lower Cretaceous Crato Formation (Brazil) by Alberto et al. (2023).[34]
Eurypterids
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen et sp. nov |
Valid |
Wang et al. |
Ordovician |
Wenchang Formation |
Likely the oldest adelophthalmid. |
|
Eurypterid research
[edit]- Braddy (2023) reviews evidence for the predatory abilities of pterygotid eurypterids, and interprets them as likely slow swimming vagrant and ambush predators, with different taxa adapted to feeding on different types of prey.[36]
- Bicknell, Kenny & Plotnick (2023) present a new, three-dimensional reconstruction of Acutiramus.[37]
Xiphosurans
[edit]Xiphosuran research
[edit]- A study on the evolution of the developmental patterns of xiphosurans is published by Lustri et al. (2023), who find evidence of changes in the allometric growth of xiphosurans related to adaptations to different environments, but also report that the studied changes were relatively minor compared to the diversity of patterns of allometric growth observed in eurypterids and chasmataspidids.[38]
- Klompmaker et al. (2023) describe a specimen of Limulitella bronnii from the Anisian Muschelkalk sediments of the Vossenveld Formation (Netherlands), extending known temporal range of this species, and provide the diagnosis of L. bronnii for the first time.[39]
Other chelicerates
[edit]- Siveter et al. (2023) describe two new specimens of Haliestes dasos from the Silurian Coalbrookdale Formation (United Kingdom), interpret their anatomy as indicative of adaptation of the studied species to a different mode of feeding than in living sea spiders, as well as possibly indicative of the presence of sexual dimorphism, and assign H. dasos to the stem group rather than the crown group of Pycnogonida.[40]
- Revision of the Callovian sea spider taxa from the La Voulte-sur-Rhône (France) is published by Sabroux et al. (2023), who assign the studied fossil to Pantopoda, crown-group Pycnogonida, assign Palaeopycnogonides gracilis to the new family Palaeopycnogonididae, and interpret Colossopantopodus boissinensis and Palaeoendeis elmii as members of the families Colossendeidae and Endeidae, respectively.[41]
General chelicerate research
[edit]Crustaceans
[edit]Malacostracans
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Valid |
Garassino, Pasini & Castro |
Pliocene to early Pleistocene |
A goneplacid crab. The type species is Albaidaplax ispalensis. Announced in 2013;[43] validated in 2023. |
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|
Sp. nov |
Valid |
Yost, Feldmann & Schweitzer |
Paleocene |
A member of Galatheoidea belonging to the family Catillogalatheidae. |
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|
Sp. nov |
Valid |
Vohs, Feldmann & Schweitzer |
Carboniferous (Pennsylvanian) |
A malacostracan of uncertain affinities. |
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|
Sp. nov |
Valid |
Gašparič et al. |
Miocene (Messinian) |
A species of Austropotamobius. |
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|
Gen. et comb. nov |
Valid |
Schweitzer et al. |
Early Cretaceous (Aptian) |
A caridean shrimp; a new genus for "Atyoida" roxoi Beurlen (1950). Announced in 2019;[48] validated in 2023. |
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|
Sp. nov |
Valid |
Coole & De Angeli |
Oligocene (Rupelian) |
A member of the family Callianassidae. |
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|
Balsscallichirus soghensis[49] |
Sp. nov |
Valid |
Coole & De Angeli |
Oligocene (Rupelian) |
A member of the family Callianassidae. |
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|
Sp. nov |
Valid |
De Mazancourt, Wappler & Wedmann |
Eocene |
Possibly a member of the family Palaemonidae. Announced in 2022; the correction including evidence of registration in ZooBank was published in 2023.[51] |
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|
Gen. et sp. nov |
Valid |
De Angeli |
Eocene |
A crab belonging to the family Corystidae. The type species is B. caporiondoi. |
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|
Sp. nov |
Vega, Nyborg & Garassino |
Late Cretaceous (Maastrichtian) |
A crab belonging to the family Lyreididae. |
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|
Sp. nov |
Valid |
Miller, Schweitzer & Feldmann |
Paleocene |
Kambühel Formation |
A crab belonging to the family Carpiliidae. |
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|
Sp. nov |
Valid |
Hyžný, Vega & Coutiño |
Late Cretaceous (Maastrichtian) |
A member of Callianassidae, a species of Callianassa (sensu lato). Announced in 2013;[56] validated in 2023. |
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|
Gen. et sp. nov |
Valid |
Nyborg, Hyžný & Haggart |
Late Cretaceous (Campanian) |
A member of Axiidea. The type species is C. raffi. |
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|
Sp. nov |
Valid |
Feldmann, Schweitzer & Casadío |
Miocene |
A species of Cancer. |
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|
Sp. nov |
Valid |
Feldmann, Schweitzer & Casadío |
Miocene |
A species of Chaceon. |
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|
Sp. nov |
Valid |
De Angeli |
Eocene |
A crab belonging to the family Domeciidae. |
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|
Gen. et sp. nov |
Vega, Nyborg & Garassino |
Late Cretaceous (Maastrichtian) |
Potrerillos Formation |
A crab belonging to the family Raninidae. The type species is C. difuntaensis. |
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|
Gen. et sp. nov |
Valid |
Santana et al. |
Early Cretaceous (Aptian-Albian) |
A crab, probably a member of the family Orithopsidae. The type species is C. camilosantanai. Announced in 2022 in an online-only journal, and the publication did not include a ZooBank registration number;[60] validated in 2023. |
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|
Sp. nov |
Valid |
De Angeli |
Eocene |
A crab belonging to the family Corystidae. |
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|
Sp. nov |
Valid |
Nyborg, Vega & Filkorn |
Paleocene |
A retroplumid crab. Announced in 2009;[62] validated in 2023. |
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|
Sp. nov |
Ferratges & Zamora in García-Penas et al. |
Early Cretaceous |
Maestrazgo Basin |
A hermit crab. |
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|
Gen. et sp. nov |
Valid |
Nyborg, Garassino & Vega |
Late Cretaceous (Campanian) |
A member of Homolidae. The type species is C. boweni. Announced in 2017;[65] validated in 2023. |
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|
Gen. et sp. nov |
Valid |
Liu et al. |
Silurian |
Fentou Formation |
A member of Phyllocarida belonging to the group Archaeostraca. Genus includes new species C. future. |
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|
Sp. nov |
Valid |
Wallaard et al. |
Miocene (Serravallian-Messinian) |
Pakhna Formation |
A species of Dardanus. |
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|
Sp. nov |
Valid |
Wallaard et al. |
Miocene (Serravallian-Messinian) |
Pakhna Formation |
A species of Dardanus. |
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|
Sp. nov |
Valid |
Gómez-Cruz, Bermúdez & Vega |
Early Cretaceous (Valanginian) |
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|
Gen. et sp. nov |
Valid |
Van Bakel et al. |
Late Cretaceous (late Campanian) |
A crab, a member of Portunoidea sensu lato. The type species is D. velauciensis. Announced in 2019;[71] validated in 2023. |
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|
Gen. et sp. nov |
Valid |
Feldmann, Schweitzer & Casadío |
Oligocene |
A member of the family Mithracidae. The type species is D. santacruzensis. |
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|
Sp. nov |
Valid |
Miller, Schweitzer & Feldmann |
Paleocene |
Kambühel Formation |
A crab belonging to the family Dromiidae. |
|||
|
Dromiopsis bullamelga[54] |
Sp. nov |
Valid |
Miller, Schweitzer & Feldmann |
Paleocene |
Kambühel Formation |
A crab belonging to the family Dromiidae. |
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|
Gen. et sp. nov |
Valid |
Alencar et al. |
Early Cretaceous (Aptian-Albian) |
A member of Stenopodidea of uncertain affinities. The type species is D. parvus. |
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|
Sp. nov |
Valid |
Vega, Garassino & Zapata-Jaime |
Late Cretaceous (Campanian) |
An erymid, a species of Enoploclytia. Announced in 2013;[74] validated in 2023. |
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|
Gen. et comb. nov |
Schädel, Nagler & Hyžný |
Middle Jurassic (Callovian) |
An isopod belonging to the group Scutocoxifera. The type species is "Urda" rhodanica Van Straelen (1928). |
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|
Sp. nov |
Valid |
Karasawa, Ohara & Kato |
Early Cretaceous (Barremian) |
Arida Formation |
A member of the family Galatheidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[76] |
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|
Gen. et sp. nov |
Valid |
Ferratges et al. |
Eocene |
Pamplona Marls Formation |
A crab belonging to the family Epialtidae and the subfamily Pisinae. The type species is E. eocenica. |
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|
Sp. nov |
Valid |
Karasawa, Ohara & Kato |
Early Cretaceous (Barremian) |
Arida Formation |
Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[76] |
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|
Sp. nov |
Valid |
Feldmann, Schweitzer & Casadío |
Miocene |
A member of the family Majidae. |
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|
Gen. et comb. nov |
Ossó, van Bakel & Artal in Ossó et al. |
Early Cretaceous (Aptian) |
The type species is G. angustus (Wright & Collins, 1972) |
|||||
|
Gen. et comb. nov |
Valid |
Garassino et al. |
Middle Triassic |
A member of the family Penaeidae. Genus includes "Antrimpos" germanicus Brandt & Schulz (2013) |
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|
Sp. nov |
Charbonnier, Garassino & López-Horgue |
Early Jurassic (Pliensbachian–Toarcian) |
||||||
|
Sp. nov |
Valid |
Liu et al. |
Silurian |
Fentou Formation |
A member of Phyllocarida belonging to the group Archaeostraca. |
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|
Nom. nov |
Valid |
Lima et al. |
Miocene |
Pirabas Formation |
A species of Hepatus; a replacement name for Cyclocancer tuberculatus Beurlen (1958). |
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|
Sp. nov |
Valid |
Karasawa, Ohara & Kato |
Early Cretaceous (Barremian) |
Arida Formation |
Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[76] |
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|
Gen. et sp. nov |
Ossó, van Bakel & Artal in Ossó et al. |
Early Cretaceous (Aptian) |
The type species is I. vinea. |
|||||
|
Gen. et sp. nov |
García-Vázquez, Alvarado-Ortega & Vega |
An isopod belonging to the family Sphaeromatidae. The type species is J. pliocenica. |
||||||
|
Sp. nov |
Valid |
Starzyk et al. |
Late Jurassic (Tithonian) |
A crab belonging to the family Homolidae. |
||||
|
Laeviprosopon joecollinsi[83] |
Sp. nov |
Valid |
Starzyk et al. |
Late Jurassic (Oxfordian) |
A crab belonging to the family Homolidae. |
|||
|
Laeviprosopon lanceatum[83] |
Sp. nov |
Valid |
Starzyk et al. |
Late Jurassic (Oxfordian) |
A crab belonging to the family Homolidae. |
|||
|
Gen. et sp. nov |
Valid |
Fraaije et al. |
Early Cretaceous (Albian) |
A hermit crab. Genus includes new species L. wissantensis. |
||||
|
Sp. nov |
Valid |
Charbonnier et al. |
Late Cretaceous (Cenomanian) |
A member of the family Mecochiridae. |
||||
|
Gen. et sp. nov |
In press |
Van Bakel & Guinot |
Middle Jurassic (Callovian) |
A crab belonging to the family Glaessneropsidae. The type species is M. boursicoti. |
||||
|
Sp. nov |
Ossó, van Bakel & Artal in Ossó et al. |
Early Cretaceous (Aptian) |
||||||
|
Sp. nov |
Valid |
De Angeli |
Eocene |
A crab belonging to the family Parthenopidae. |
||||
|
Sp. nov |
Valid |
Bruce & Rodcharoen |
Cretaceous |
Burmese amber |
An isopod belonging to the family Cirolanidae. |
|||
|
Sp. nov |
Valid |
Gašparič et al. |
Miocene |
A species of Metanephrops. Announced in 2021;[89] validated in 2023. |
||||
|
Sp. nov |
Valid |
Charbonnier et al. |
Late Jurassic (Oxfordian) |
A member of the family Mecochiridae. |
||||
|
Comb. nov |
Valid |
Lima et al. |
Miocene |
Pirabas Formation |
A crab belonging to the family Aethridae. Moved from Hepatella amazonica Beurlen (1958). The type species of the new genus Miohepatus, which also includes extant species Miohepatus peruvianus (originally Hepatella peruviana Rathbun, 1933) |
|||
|
Gen. et sp. nov |
Fraaije et al. |
Early Cretaceous (Albian) |
A hermit crab belonging to the family Probeebeidae. The type species is M. tripudium. |
|||||
|
Sp. nov |
Valid |
Mychko et al. |
Late Cretaceous (Cenomanian) |
Lyamino Formation |
A crab belonging to the group Raninoida. |
|||
|
Necrocarcinus mariae[78] |
Sp. nov |
Ossó, van Bakel & Artal in Ossó et al. |
Early Cretaceous (Aptian) |
|||||
|
Sp. nov |
Valid |
Feldmann, Schweitzer & Casadío |
Miocene |
|||||
|
Sp. nov |
Valid |
Guzmán et al. |
Late Cretaceous (Campanian) |
A member of Macropipidae, a species of Ophthalmoplax. Announced in 2016;[94] validated in 2023. |
||||
|
Gen. et comb. nov |
Valid |
Nyborg, Garassino & Nyborg |
Eocene |
A lyreidid crab. |
||||
|
Gen. et sp. nov |
Valid |
Artal, Onetti & Ossó |
Eocene (Lutetian) |
A crab belonging to the family Pseudoziidae. The type species is O. lenis. |
||||
|
Gen. et sp. nov |
Valid |
Braig et al. |
Early Jurassic |
Moltrasio Formation |
A mantis shrimp belonging to the group Unipeltata. The type species is O. teruzzii. |
|||
|
Sp. nov |
Valid |
Wallaard et al. |
Miocene |
A hermit crab, a species of Paguristes. |
||||
|
Sp. nov |
Ossó, van Bakel & Artal in Ossó et al. |
Early Cretaceous (Aptian) |
A hermit crab, possibly a species of Pagurus. |
|||||
|
Sp. nov |
Valid |
Wallaard et al. |
Miocene |
St. Marys Formation |
A hermit crab, a species of Pagurus. |
|||
|
Sp. nov |
Valid |
Karasawa, Ohara & Kato |
Early Cretaceous (Barremian) |
Arida Formation |
An isopod belonging to the family Cirolanidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[76] |
|||
|
Sp. nov |
Ferratges & Zamora in García-Penas et al. |
Early Cretaceous |
Maestrazgo Basin |
A crab. |
||||
|
Gen. et sp. nov |
Valid |
Fraaije et al. |
Late Jurassic (Oxfordian) |
A furry lobster. The type species is P. montserratae. |
||||
|
Sp. nov |
Valid |
Nyborg, Garassino & Vega |
Early Eocene |
A member of Homolidae. Announced in 2017;[65] validated in 2023. |
||||
|
Sp. nov |
Valid |
De Angeli |
Eocene |
A species of Percnon. |
||||
|
Gen. et sp. nov |
Valid |
Schweigert |
A crab belonging to the group Homolodromioidea and the family Prosopidae. The type species is P. thauckei. Announced in 2021 in an online-only journal;[102] validated in 2023.[101] |
|||||
|
Sp. nov |
Valid |
Wallaard et al. |
Miocene (Serravallian-Messinian) |
Pakhna Formation |
A species of Petrolisthes. |
|||
|
Sp. nov |
Valid |
Ferratges et al. |
Eocene |
Pamplona Formation |
A crab belonging to the family Parthenopidae and the subfamily Dairoidinae. |
|||
|
Gen. et sp. nov |
Lima et al. |
Miocene |
Pirabas Formation |
A crab belonging to the family Pilumnidae. The type species is P. iara. |
||||
|
Sp. nov |
Valid |
Ferratges et al. |
Eocene |
Pamplona Marls Formation |
A crab belonging to the family Epialtidae and the subfamily Pisinae. |
|||
|
Sp. nov |
Valid |
Yost, Feldmann & Schweitzer |
Paleocene |
Kambühel Formation |
A member of the family Munididae. |
|||
|
Sp. nov |
Valid |
Pasini, Garassino & Charbonnier |
Middle Triassic (Anisian) |
A litogastrid lobster. |
||||
|
Sp. nov |
Valid |
Van Bakel, Ossó & Téodori |
Paleocene (Thanetian) |
A crab belonging to the group Raninoidea and the family Lyreididae. |
||||
|
Gen. et sp. nov |
Valid |
Nyborg, Fraaije & Dunbar |
Pliocene (Piacenzian) |
A hermit crab belonging to the family Calcinidae. Genus includes new species S. calvanoi. |
||||
|
Gen. et sp. nov |
Valid |
Barros & de Oliveira |
Early Cretaceous (Aptian-Albian) |
A member of Penaeoidea. The type species is S. piauiensis. |
||||
|
Sp. nov |
Liu et al. |
Ordovician |
Lashizhong Formation |
A member of Phyllocarida belonging to the group Archaeostraca and the family Caryocarididae. |
||||
|
Sp. nov |
Valid |
Ferratges et al. |
Eocene |
Pamplona Marls Formation |
A crab belonging to the family Majidae. |
|||
|
Gen. et sp. nov |
Valid |
Yost, Feldmann & Schweitzer |
Paleocene |
Kambühel Formation |
A hermit crab belonging to the family Annuntidiogenidae. The type species is S. insecta. |
|||
|
Gen. et sp. nov |
Valid |
Pazinato, Müller & Haug |
Cretaceous |
Burmese amber |
A member of Tanaidacea. The type species is T. kachinensis. |
|||
|
Sp. nov |
Valid |
Fraaije et al. |
Middle Jurassic (Bajocian) |
A tanidromitid crab. Announced in 2013;[112] validated in 2023. |
||||
|
Gen. et sp. nov |
Valid |
Smith, Charbonnier, Fara & Brayard in Smith et al. |
Early Triassic |
A mantis shrimp belonging to the group Unipeltata. The type species is T. ahyongi. |
||||
|
Sp. nov |
Valid |
Kato in Kato et al. |
Miocene |
Kosho Formation |
A member of the family Trichopeltariidae. |
|||
|
Sp. nov |
Schädel, Nagler & Hyžný |
Middle Jurassic (Bajocian) |
An isopod belonging to the group Scutocoxifera. |
|||||
|
Comb. nov |
(Malzahn) |
Early Cretaceous (Hauterivian) |
An isopod belonging to the group Scutocoxifera. Moved from "Palaega" stemmerbergensis Malzahn (1968). |
|||||
|
Comb. nov |
(Reiff) |
Early Jurassic (Pliensbachian) |
An isopod belonging to the group Scutocoxifera. Moved from "Palaega" suevica Reiff (1936). |
|||||
|
Sp. nov |
In press |
Van Bakel & Guinot |
Middle Jurassic (Callovian) |
A crab belonging to the family Glaessneropsidae. |
||||
|
Gen. et comb. nov |
Ferratges & Zamora in García-Penas et al. |
Early Cretaceous |
Maestrazgo Basin |
A hermit crab. The type species is "Pagurus" avellanedai Vía (1951). |
||||
|
Gen. et sp. nov |
In press |
Van Bakel & Guinot |
Jurassic (Toarcian-Callovian) |
Austria-Germany border area |
A crab belonging to the family Glaessneropsidae. The type species is V. keuppi. |
|||
|
Sp. nov |
Valid |
Karasawa, Ohara & Kato |
Early Cretaceous (Barremian) |
Arida Formation |
A member of the family Etyidae. Announced in 2008 in an online-only journal, prior to electronic-only publications being allowed under ICZN; validated in 2023.[76] |
Malacostracan research
[edit]- Chény, Charbonnier & Audo (2023) reexamine the fossil record of lobsters from the Middle Jurassic of Normandy (France), providing evidence of the presence of sexual dimorphism in Glyphea dressieri and proposing the first reconstruction of this lobster.[115]
- Klompmaker et al. (2023) report the discovery of a specimen of Secretanella sp. from a Campanian methane seep in South Dakota (United Kingdom) preserved with parts of its internal anatomy, including the first esophagus preserved in a fossil decapod reported to date.[116]
- New specimen of Eogeryon elegius, providing new information on the anatomy of this crab, is described from the Cenomanian Villa de Vés Formation (Spain) by Ossó (2023).[117]
- Putative hypothalassiid Lathahypossia aculeata is reinterpreted as a xanthid by Ossó & Ng (2023).[118]
- A specimen of Araripenaeus timidus with a swelling on its carapace which might be indicative of infestation by bopyrid isopods is described from the Lower Cretaceous Romualdo Formation (Brazil) by Lima et al. (2023), representing the oldest evidence of parasitism in marine dendrobranchiate shrimps reported to date.[119]
- New solenocerid, glypheid and mecochirid fossil material is reported from the upper Callovian sites of the Ryazan Region (Russia) by Dadykin & Shmakov (2023).[120]
- A study on the extinction and survival of the decapod crustacean groups during the Cretaceous–Paleogene extinction event is published by Schweitzer & Feldmann (2023).[121]
Ostracods
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Luo et al. |
Carboniferous (Pennsylvanian) |
||||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Hawramy, Al-Obidee & Aziz |
Late Cretaceous |
Shiranish Formation |
A member of the family Bairdiidae. |
|||
|
Sp. nov |
Valid |
Hawramy, Al-Obidee & Aziz |
Late Cretaceous |
Shiranish Formation |
A member of the family Bairdiidae. |
|||
|
Sp. nov |
In press |
Camilleri, Weldon & Warne |
Devonian (Emsian) |
Woori Yallock Formation |
A member of Palaeocopida belonging to the group Beyrichicopina and the family Craspedobolbinidae. |
|||
|
Sp. nov |
Valid |
Khosla et al. |
Late Cretaceous-Paleocene transition |
|||||
|
Sp. nov |
Perrier et al. |
Silurian (Přídolí) |
A myodocope ostracod. |
|||||
|
Gen. et sp. nov |
In press |
Williams et al. |
Si Ka Formation |
A glossomorphitine hollinoidean ostracod. Genus includes new species C. hagiangensis. |
||||
|
Sp. nov |
Valid |
Zamudio & Carignano |
Miocene |
A member of the family Cytherideidae. |
||||
|
Sp. nov |
Shahin, El Khawagah & Shahin |
|||||||
|
Sp. nov |
Kumari |
Middle Jurassic |
Jaisalmer Formation |
A species of Cytherella. The name is shared with Cytherella indica Neale & Singh (1986). |
||||
|
Cytheropteron tesakovae[132] |
Sp. nov |
Karpuk |
Early Cretaceous (Barremian–Aptian) |
Crimea |
A member of Podocopida belonging to the family Paradoxostomatidae. The specific name is shared with Cytheropteron tesakovae Kempf (2011). |
|||
|
Sp. nov |
Valid |
Santos Filho et al. |
Early Cretaceous |
|||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Luo et al. |
Carboniferous (Pennsylvanian) |
||||||
|
Sp. nov |
Valid |
Hawramy, Al-Obidee & Aziz |
Late Cretaceous |
Shiranish Formation |
A member of the family Hemicytheridae. |
|||
|
Nom. nov |
Valid |
Antonietto & Brandão |
Devonian |
A member of the family Bairdiidae; a replacement name for Bairdiella Egorova (1960). |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Forel & Chitnarin |
Late Triassic (Carnian) |
Kang Pla Formation |
|||||
|
Sp. nov |
Valid |
Khosla et al. |
Late Cretaceous-Paleocene transition |
Deccan Intertrappean Beds |
A species of Limnocythere. |
|||
|
Sp. nov |
Forel & Chitnarin |
Permian |
||||||
|
Sp. nov |
Valid |
Santos Filho et al. |
Early Cretaceous |
|||||
|
Sp. nov |
Valid |
Cabral & Lord in Danielopol et al. |
São Gião Formation |
A member of the family Cytheruridae. |
||||
|
Sp. nov |
Valid |
Kumari |
Middle Jurassic |
Jaisalmer Formation |
||||
|
Gen. et sp. nov |
In press |
Williams et al. |
Silurian |
Si Ka Formation |
A sigmoopsine hollinoidean ostracod. Genus includes new species M. amicus. |
|||
|
Sp. nov |
Shahin, El Khawagah & Shahin |
|||||||
|
Sp. nov |
Valid |
Santos Filho et al. |
Early Cretaceous |
|||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Kumari |
Middle Jurassic |
Jaisalmer Formation |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Nom. nov |
Li |
Silurian |
A member of the family Bythocytheridae; a replacement name for Scaphium Jordan (1964). Published online in 2024, but the issue date is listed as December 2023. |
|||||
|
Sp. nov |
Valid |
Tanaka |
Carboniferous (Pennsylvanian) |
Nagaiwa Formation |
||||
|
Sp. nov |
Valid |
Kumari |
Middle Jurassic |
Jaisalmer Formation |
||||
|
Sp. nov |
Valid |
Khosla et al. |
Late Cretaceous-Paleocene transition |
Deccan Intertrappean Beds |
Ostracod research
[edit]Thecostracans
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. nov |
Valid |
Gale & Vidovic |
Late Cretaceous (Cenomanian) |
Grey Chalk Subgroup |
A barnacle belonging to the group Balanomorpha and the family Brachylepadidae. The type species is C. recurvus. |
|||
|
Gen. et 2 sp. nov |
Valid |
Gale & Vidovic |
Late Cretaceous (Cenomanian to Coniacian) |
Grey Chalk Subgroup |
A barnacle belonging to the group Balanomorpha and the family Brachylepadidae. The type species is C. hoensis; genus also includes C. aycliffensis. |
|||
|
Sp. nov |
Valid |
Gale et al. |
Late Triassic (Carnian) |
Grabfeld Formation |
A barnacle belonging to the family Eolepadidae. |
|||
|
Sp. nov |
Valid |
Gale & Vidovic |
Late Cretaceous (Cenomanian) |
West Melbury Formation |
A barnacle belonging to the group Verrucomorpha and the family Eoverrucidae. |
|||
|
Sp. nov |
Valid |
Gale & Vidovic |
Late Cretaceous (Cenomanian) |
West Melbury Formation |
A barnacle belonging to the group Verrucomorpha and the family Pycnolepadidae. |
|||
|
Sp. nov |
Valid |
Gale in De Schutter et al. |
Oligocene (Rupelian) |
Boom Formation |
A barnacle belonging to the family Chelonibiidae. |
|||
|
Sp. nov |
Valid |
Gale & Vidovic |
Early Cretaceous (Aptian) |
Bargate Formation |
A barnacle belonging to the group Verrucomorpha and the family Pycnolepadidae. |
Thecostracan research
[edit]Other crustaceans
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
In press |
Li |
Late Jurassic |
A clam shrimp. |
||||
|
Nom. nov |
Valid |
Ceccolini & Cianferoni |
Late Jurassic |
A member of the family Eosestheriidae; a replacement name for Pingquania Wang in Wang & Li (2008). Published online in 2024, but the issue date is listed as December 2023. |
||||
|
Gen. et sp. nov |
Valid |
Tang et al. |
A member of Cyclida. Genus includes new species M. terengganuensis. Announced in 2021;[145] validated in 2023. |
|||||
|
Sp. nov |
Valid |
Liao & Huang in Liao et al. |
Late Jurassic |
Maao Formation |
A clam shrimp. |
Other crustacean research
[edit]- Li (2023) redescribes the type material of Anyuanestheria subquadrata and emends its diagnosis.[147]
General crustacean research
[edit]Insects
[edit]Megacheirians
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
Megacheirian research
[edit]Radiodonts
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Paterson, García-Bellido & Edgecombe |
| |||||
|
Gen. et comb. nov |
Valid |
Paterson, García-Bellido & Edgecombe |
Cambrian Stage 4 |
A member of the family Tamisiocarididae. The type species is "Anomalocaris" briggsi Nedin (1995). |
| |||
|
Gen. et comb. nov |
Zhang et al. |
Wulongqing Formation |
An amplectobeluid radiodont. The type species is "Anomalocaris" kunmingensis Wang, Huang & Hu (2013). |
| ||||
|
Sp. nov |
Valid |
Potin, Gueriau & Daley |
Ordovician (Tremadocian) |
A suspension feeding hurdiid radiodont within new subfamily Aegirocassisinae. |
|
Radiodont research
[edit]- A study on molting patterns and ontogeny in Stanleycaris is published by Moysiuk & Caron (2023), who find evidence for two distinct fossil types of Stanleycaris (carcasses and molted exoskeletal remains), interpret their findings as confirming that radiodonts grew by periodic ecdysis, and consider the general pattern of molting in Stanleycaris to be likely shared with other radiodonts and possibly with other early arthropods.[151]
- A study on the functional capabilities and hydrodynamic performance of the frontal appendages of Anomalocaris canadensis is published by Bicknell et al. (2023), who interpret their findings as indicating that A. canadensis targeted soft-bodied prey.[152]
- A study on the development of the frontal appendage of Amplectobelua symbrachiata is published by Wu et al. (2023), who interpret their findings as indicative of rapid growth.[153]
Trilobites
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Gen. et sp. et comb. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
A member of the family Tropidocoryphidae. The type species is A. hermanni; genus also includes "Wolayella" celox Šnajdr (1980). |
||||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Asaphida belonging to the family Dikelocephalidae. |
|||
|
Gen. et sp. nov |
Valid |
Ingham & Fortey |
Ordovician |
Charchaq Group |
A member of Asaphida belonging to the group Cyclopygoidea and the family Ellipsotaphridae. Genus includes new species A. zhouzhiyii. |
|||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Ordovician (Tremadocian) |
Talo Wao Formation |
A member of the family Asaphidae. |
|||
|
Asaphellus zheni[157] |
Sp. nov |
In press |
Smith & Allen |
Ordovician (Floian) |
Nambeet Formation |
A member of the family Asaphidae. |
||
|
Sp. nov |
Valid |
Flick |
Devonian |
|||||
|
Aulacopleurella platurris[158] |
Sp. nov |
Valid |
Flick |
Devonian |
||||
|
Sp. nov |
Kerber et al. |
Devonian |
||||||
|
Nom. nov |
Valid |
Basse & Müller |
Devonian |
A member of the family Lichidae; a replacement name for Lobopyge Přibyl & Erben (1952). The type species is "Lichas" branikensis Barrande (1872). |
||||
|
Sp. nov |
Valid |
Westrop & Eoff |
Cambrian (Jiangshanian) |
Shallow Bay Formation |
||||
|
Gen. et comb. nov |
Valid |
Basse & Müller |
Silurian |
A member of the family Odontopleuridae. The type species is "Radiaspis" pecten Santel (2001). |
||||
|
Sp. nov |
Valid |
Sun et al. |
Burgasutay Formation |
|||||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Asaphida belonging to the family Dikelocephalidae. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian |
Greifenstein Limestone |
A member of the family Odontopleuridae. |
|||
|
Ceratocephala hoerriana[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian |
Greifenstein Limestone |
A member of the family Odontopleuridae. |
||
|
Ceratocephala martinii[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Odontopleuridae. |
||
|
Sp. nov |
Valid |
Feist & Clarkson |
Silurian |
A member of the family Odontopleuridae. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Phacopidae. |
|||
|
Chotecops braunfelsensis[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Phacopidae. |
||
|
Sp. nov |
Valid |
Ingham & Fortey |
Ordovician |
Myoch Formation |
||||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Ordovician (Tremadocian) |
Talo Wao Formation |
A member of the family Eurekiidae. |
|||
|
Sp. nov |
Valid |
Müller & Hahn |
Carboniferous (Viséan) |
Hillershausen Formation |
||||
|
Sp. nov |
Valid |
Flick & Flick |
Devonian (Eifelian) |
A member of Proetida belonging to the family Aulacopleuridae and the subfamily Otarioninae. |
||||
|
Gen. et sp. nov |
Valid |
Alberti |
Devonian |
A member of Phacopida belonging to the family Calymenidae and the subfamily Reedocalymeninae. The type species is D. beichti. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
|||
|
Diademaproetus frankschmidti[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Proetidae. |
||
|
Diademaproetus holzapfeli ahrensi[154] |
Ssp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
||
|
Sp. nov |
Valid |
Basse & Lemke |
Devonian (Famennian) |
Wocklum Limestone |
||||
|
Sp. nov |
Valid |
Feist & Clarkson |
Silurian (Homerian) |
A member of the family Odontopleuridae. |
||||
|
Gen. et sp. nov |
Valid |
Adrain & Pérez-Peris |
Ordovician (Dapingian) |
An odontopleurine trilobite. The type species is F. deathvalleyensis. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
|||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Ordovician (Tremadocian) |
Talo Wao Formation |
A member of Asaphida belonging to the family Remopleurididae. |
|||
|
Sp. nov |
Peng et al. |
Cambrian (Guzhangian) |
Longha Formation |
|||||
|
Sp. nov |
Valid |
Feist & Clarkson |
Silurian (Homerian) |
A member of the family Odontopleuridae. |
||||
|
Kettneraspis anteflexa[162] |
Sp. nov |
Valid |
Feist & Clarkson |
Silurian (Homerian) |
A member of the family Odontopleuridae. |
|||
|
Kettneraspis loehnbergensis[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Odontopleuridae. |
||
|
Kettneraspis rojanensis[162] |
Sp. nov |
Valid |
Feist & Clarkson |
Silurian (Homerian) |
A member of the family Odontopleuridae. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Odontopleuridae. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Eifelian) |
Günterod Limestone |
A member of the family Proetidae. |
|||
|
Koneprusites lahnae[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
||
|
Sp. nov |
Valid |
Feist & Clarkson |
Silurian (Homerian) |
A member of the family Odontopleuridae. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Phacopidae. |
|||
|
Gen. et sp. nov |
In press |
Peng et al. |
Longha Formation |
A dameselloid trilobite. Genus includes new species L. leishuae. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Shale |
A member of the family Odontopleuridae. |
|||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Asaphida belonging to the family Dikelocephalidae. |
|||
|
Sp. nov |
Smith |
Cambrian (Jiangshanian) |
Goyder Formation |
A dokimocephalid trilobite. |
||||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
|||
|
Sp. nov |
In press |
Smith & Allen |
Ordovician (Floian) |
Nambeet Formation |
A member of the family Asaphidae. |
|||
|
Gen. et comb. nov |
Valid |
Holloway |
Devonian (Pragian to Emsian) |
Norton Gully Sandstone |
A scutelluid trilobite. The type species is "Bronteus" enormis Etheridge (1894). |
|||
|
Sp. nov |
Valid |
Blackwell & Westrop |
Cambrian (Jiangshanian) |
Honey Creek Formation |
A member of the family Eurekiidae. |
|||
|
Monocheilus richardi[172] |
Sp. nov |
Valid |
Blackwell & Westrop |
Cambrian (Jiangshanian) |
Honey Creek Formation |
A member of the family Eurekiidae. |
||
|
Sp. nov |
Valid |
Flick |
Devonian |
|||||
|
Sp. nov |
In press |
Smith & Allen |
Ordovician (Floian) |
Nambeet Formation |
A member of the family Asaphidae. |
|||
|
Comb. nov |
(Rusconi) |
Cambrian (Guzhangian) |
Moved from Cancapolia proa Rusconi (1954). |
|||||
|
Sp. nov |
Junior synonym |
Zong |
Devonian (Famennian) |
A phacopid trilobite. Subsequently considered to be a junior synonym of Omegops mobilis (Xiang, 1981) by Zong (2023).[176] |
||||
|
Omegops xiangi[175] |
Sp. nov |
Junior synonym |
Zong |
Devonian (Famennian) |
A phacopid trilobite. Subsequently considered to be a junior synonym of Clarksonops junggariensis Crônier in Crônier and Waters (2022) by Zong (2023), resulting in a new combination Omegops junggariensis.[176] |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Proetidae. |
|||
|
Sp. nov |
Valid |
Korovnikov |
Cambrian |
Kuonamka Formation |
||||
|
Oryctocephalus molodoensis[177] |
Sp. nov |
Valid |
Korovnikov |
Cambrian |
Kuonam formation |
|||
|
Sp. nov |
Valid |
Flick & Flick |
Devonian (Eifelian) |
A member of Proetida belonging to the family Aulacopleuridae and the subfamily Otarioninae. |
||||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Corynexochida belonging to the group Leiostegiina and the family Leiostegiidae. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Lichidae. |
|||
|
Ssp. nov |
Valid |
Flick |
Devonian |
|||||
|
Phaetonellus naspae[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Tropidocoryphidae. |
||
|
Phaetonellus planicauda spechti[173] |
Ssp. nov |
Valid |
Flick |
Devonian |
||||
|
Phaetonellus pymon guenterodicus[173] |
Ssp. nov |
Valid |
Flick |
Devonian |
||||
|
Phaetonellus vaneki gryps[173] |
Ssp. nov |
Valid |
Flick |
Devonian |
||||
|
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
||||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Corynexochida belonging to the group Leiostegiina and the family Missisquoiidae. |
|||
|
Sp. nov |
Valid |
Blackwell & Westrop |
Cambrian (Jiangshanian) |
Fort Sill Formation |
A member of the family Ptychaspididae. |
|||
|
Ptychaspis occulta[172] |
Sp. nov |
Valid |
Blackwell & Westrop |
Cambrian |
A member of the family Ptychaspididae. |
|||
|
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
||||
|
Pulcherproetus inexspectatus[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Pulcherproetus laerheidensis[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Pulcherproetus maennilae[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Pulcherproetus schranki[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Pulcherproetus sutherbergensis[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Pulcherproetus trachyglossus[178] |
Sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. |
|||
|
Sp. nov |
Basse & Lemke |
Devonian (Famennian) |
Wocklum Limestone |
A member of the family Phacopidae. Basse & Lemke (2023) did not exclude the possibility of the synonymy with R. evae.[166] |
||||
|
Rabienops dxv[166] |
Sp. nov |
Basse & Lemke |
Devonian (Famennian) |
Wocklum Limestone |
A member of the family Phacopidae. Basse & Lemke (2023) did not exclude the possibility of the synonymy with R. evae.[166] |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian |
A member of the family Odontopleuridae. |
||||
|
Radiaspis knoppi[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian |
Greifenstein Limestone |
A member of the family Odontopleuridae. |
||
|
Sp. nov |
Wei et al. |
Ordovician (Katian) |
Koumenzi Formation |
|||||
|
Gen. et comb. et sp. nov |
Valid |
Basse & Müller |
Devonian |
A member of the family Lichidae. The type species is "Lichas" decheni Holzapfel (1895); genus also includes "Lobopyge" niobe Basse (1998) and a new species R. schneideri. |
||||
|
Sp. nov |
In press |
Smith & Allen |
Ordovician (Floian) |
Nambeet Formation |
A member of the family Asaphidae. |
|||
|
Sp. nov |
In press |
Smith & Allen |
Ordovician (Tremadocian) |
Nambeet Formation |
A member of the family Asaphidae. |
|||
|
Gen. et sp. nov |
Valid |
Basse & Schöning |
Silurian |
A member of the family Proetidae. Genus includes new species S. wiedae. |
||||
|
Comb. nov |
Valid |
(Richter & Richter) |
Devonian (Famennian) |
Wocklum Limestone |
A member of the family Phacopidae. Moved from Phacops (Cryphops?) wocklumeriae Richter & Richter (1926). |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian |
Wissenbach Shale |
A member of the family Phacopidae. |
|||
|
Struveaspis liuunensis[154] |
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Phacopidae. |
||
|
Gen. et sp. nov |
Valid |
Ingham & Fortey |
Ordovician |
Myoch Formation |
A member of Asaphida belonging to the group Cyclopygoidea and the family Ellipsotaphridae. Genus includes new species S. oarion. |
|||
|
Gen. et sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Ordovician (Tremadocian) |
Talo Wao Formation |
A member of Asaphida belonging to the family Remopleurididae. The type species is T. techawani. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Scutelluidae. |
|||
|
Gen. et sp. nov |
Valid |
Westrop & Eoff |
Cambrian (Jiangshanian) |
Shallow Bay Formation |
Genus includes new species T. burkhalteri. |
|||
|
Sp. nov |
Valid |
Basse & Müller |
Devonian (Emsian) |
Leun Limestone |
A member of the family Tropidocoryphidae. |
|||
|
Sp. nov |
Valid |
Wernette & Hughes in Wernette et al. |
Cambrian (Furongian) |
Ao Mo Lae Formation |
A member of Corynexochida belonging to the group Illaenina and the family Tsinaniidae. |
|||
|
Ssp. nov |
Valid |
Müller & Hahn |
Carboniferous (Viséan) |
Hillershausen Formation |
||||
|
Gen. et sp. nov |
In press |
Smith & Allen |
Ordovician (Tremadocian) |
Nambeet Formation |
A member of the family Bathyuridae. The type species is V. jelli. |
|||
|
Gen. et comb. nov |
Valid |
Wei & Zhou |
Ordovician (Floian) |
Duoquanshan Formation |
A member of the family Asaphidae belonging to the subfamily Isotelinae. The type species is "Isotelus" tsinghaiensis Chang & Fan (1960); genus also includes "Niobe (Niobella)" obscura Zhou & Zhou (2019). |
Trilobite research
[edit]- Evidence indicating that a mechanism similar to the molecular activator/inhibitor mechanism present in vertebrates and known as the inhibitory cascade had controls on segment size development in trilobites is presented by Nikolic, Hopkins & Evans (2023).[181][182]
- A study on the timing of the appearance of trilobite planktic larvae is published Laibl, Saleh & Pérez-Peris (2023), who interpret their findings as indicating that Cambrian ecosystems were dominated by trilobites with exclusively benthic early post-embryonic stages, and that a progressive increase in the number of trilobite taxa that incorporated planktic stages in their development happened between the Miaolingian and the Middle Ordovician.[183]
- A study on the disparity of trilobite cephalic structures across Cambrian Series 2, providing evidence that the development of disparity of various cephalic structures was constrained in different ways, is published by Holmes (2023).[184]
- A study on the morphology and evolutionary relationships of Duyunaspis duyunensis, D. jianheensis and Balangia balangensis from the Cambrian Balang and Tsinghsutung formations (China) is published by Chen et al. (2023), who report evidence of gradual evolution indicative that Balangia was more likely to be an ancestor of Duyunaspis rather than its descendant.[185]
- Taxonomic revision of the species belonging to the genus Abadiella is published by Wang, Peng & Zhang (2023), who consider Parabadiella, Guangyuanaspis and Parabadiella (Danangouia) to be junior junior synonyms of Abadiella, and consider the species A. huoi and A. bourgini to have wide geographic distribution in Gondwana, making stratigraphical correlations between various Gondwana regions based on Cambrian trilobites possible.[186]
- A study on the morphology, ontogeny and systematics of Walcottaspis vanhornei is published by Srivastava & Hughes (2023).[187]
- Hou, Hughes & Hopkins (2023) report the presence of setae on the walking legs of the Cambrian Olenoides serratus and on the gill shaft of the Ordovician Triarthrus eatoni, and interpret these setae as likely used to groom the gills of the trilobites.[188]
- Evidence of the presence of countercurrent gaseous exchange mechanism in the gills of Triarthrus eatoni is presented by Hou et al. (2023).[189]
- A study on the taphonomy of the Ordovician trilobites from the Walcott–Rust quarry (New York, United States) is published by Losso, Thines & Ortega-Hernández (2023), who report evidence indicating that fine-grained sediment supported the preservation of delicate appendages and facilitated their fossilization.[190]
- A study on the morphology of the ventral part of the exoskeletons of trilobites from the Walcott–Rust quarry, providing evidence of adaptations facilitating complete enrolment convergent with those present in extant arthropods, is published by Losso et al. (2023).[191]
- Laibl et al. (2023) describe early developmental stages of at least nine trilobite species from the Fezouata Formation (Morocco), providing new information on the development of early Ordovician trilobites.[192]
- Schoenemann & Clarkson (2023) describe specimens of Aulacopleura koninckii and Cyclopyge sibilla preserved with structures interpreted as likely median eyes, and interpret this finding as indicating that early developmental stages of trilobites possessed median eyes (probably unlike adult specimens).[193]
- A study on the impact of changes of body shape and construction of Aulacopleura koninckii during its growth on changes of the style of its enrolment is published by Esteve & Hughes (2023), who find that the change in enrolment style happening at the onset of mature growth made it possible for A. koninckii to assume defensive posture regardless of the variation in the number of mature trunk segments of specimens belonging to the studied species.[194]
- A study on the hydrodynamics of Microparia speciosa, indicating that it had a high stability in the water column when it was enrolled, is published by Esteve & López-Pachón (2023).[195]
- Kraft et al. (2023) describe a specimen of Bohemolichas incola from the Darriwilian Šárka Formation (Czech Republic) preserved with fossilized gut contents, providing evidence of adaptation of the studied trilobite to feeding on organic remains including shells, and probably of digestive enzymes similar to those in modern crustaceans or chelicerates.[196]
- Gishlick & Fortey (2023) describe a specimen of Walliserops trifurcatus with a malformed cephalic trident showing four rather than three tines, and consider its anatomy to be consistent with the interpretation of the trident as a weapon used for intraspecific combat.[197]
- Fossil evidence confirming the survival of encrinurid trilobites into the earliest Devonian is reported from the Wutubulake and Mangeer formations (China) by Ma et al. (2023).[198]
- A study on the impact of the Late Devonian extinctions on the taxonomic and morphological diversity of trilobites, and on the trilobite recovery after the extinction events, is published by Bault (2023).[199]
- A study on the locomotion of trilobites, based on data from three-dimensional models, is published by Esteve & Rubio (2023), who find evidence for two main gait types reflecting burrowing and walking, as well as evidence indicating that the body structure constrained speed and lifestyles of trilobites.[200]
- A study on changes of the morphological diversity of phacopid trilobites throughout their evolutionary history is published by Bault et al. (2023).[201]
- Park (2023) examined trilobite specimens and shown that hypostome is fusion of anterior sclerite and labrum.[202]
Other arthropods
[edit]| Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
|---|---|---|---|---|---|---|---|---|
|
Sp. nov |
Valid |
Laville, Forel & Charbonnier |
Middle Jurassic (Callovian) |
|||||
|
Gen. et sp. nov |
Briggs et al. |
Silurian (Wenlock) |
A member of Artiopoda belonging to the group Vicissicaudata. The type species is C. neptuni. |
| ||||
|
Sp. nov |
Valid |
Weidner, Nielsen & Ebbestad |
Cambrian (Miaolingian) |
A member of Agnostoidea belonging to the family Spinagnostidae. |
||||
|
Gen. et sp. nov |
Valid |
Wang, Huang & Cai |
Cretaceous (Albian to Cenomanian) |
Burmese amber |
A member of Diplura belonging to the family Japygidae. The type species is C. huangi. |
|||
|
Gen. et sp. nov |
Valid |
Sánchez-García et al. |
Late Cretaceous (Cenomanian) |
Burmese amber |
A member of Diplura belonging to the family Projapygidae. The type species is E. alchemicus. |
|||
|
Gen. et sp. nov |
Valid |
Haug, Fraaije & Haug |
Carboniferous (Westphalian) |
A millipede, possibly belonging to the group Archipolypoda. The type species is L. willemeni. |
||||
|
Sp. nov |
Valid |
Sánchez-García, Sendra & Grimaldi in Sánchez-García et al. |
Miocene |
Dominican amber |
A member of Diplura belonging to the family Campodeidae. |
|||
|
Gen. et sp. nov |
Valid |
Haug, Haug & Haug |
Cretaceous |
Burmese amber |
A centipede belonging to the group Pleurostigmophora. The type species is L. anjafliessae. |
|||
|
Sp. nov |
Valid |
Sánchez-García, Sendra & Grimaldi in Sánchez-García et al. |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A member of Diplura belonging to the family Campodeidae, a species of Litocampa. |
||
|
Sp. nov |
Valid |
Zong et al. |
Silurian (Pridoli) |
|||||
|
Gen. et sp. nov |
Valid |
Laville, Forel & Charbonnier |
Middle Jurassic (Callovian) |
La Voulte-sur-Rhône Lagerstätte |
A thylacocephalan. The type species is P. harpa. |
|||
|
Sp. nov |
Valid |
Su, Cai & Huang |
Cretaceous (Albian to Cenomanian) |
Burmese amber |
A millipede belonging to the family Polydesmidae. |
|||
|
Gen. et sp. nov |
Valid |
Sánchez-García, Sendra & Grimaldi in Sánchez-García et al. |
Miocene |
Dominican amber |
A member of Diplura belonging to the family Campodeidae. The type species is R. engeli. |
|||
|
Sp. nov |
Valid |
Zhu et al. |
Yu'anshan Formation |
|||||
|
Sidneyia minor[214] |
Sp. nov |
Valid |
Du et al. |
Cambrian Stage 3 |
| |||
|
Gen. et sp. nov |
Valid |
Sánchez-García et al. |
Miocene |
Dominican amber |
A member of Diplura belonging to the family Projapygidae. The type species is S. punctatus. |
|||
|
Sp. nov |
Valid |
Edgecombe et al. |
Eocene |
Baltic amber |
Europe (Baltic Sea region) |
A centipede belonging to the family Plutoniumidae. |
||
|
Gen. et sp. nov |
Valid |
Berks et al. |
A member of Artiopoda. The type species is T. tholops. |
| ||||
|
Gen. et sp. nov |
Valid |
Zhu et al. |
Cambrian Stage 3 |
Yu'anshan Formation |
A member of Artiopoda of uncertain affinities. The type species is T. bispinosa. |
|||
|
Gen. et sp. nov |
Valid |
Zhu et al. |
Cambrian Stage 3 |
Yu'anshan Formation |
A member of Artiopoda belonging to the group Xandarellida. The type species is Z. acuticaudata. |
- New information on the anatomy of Kylinxia zhangi, indicating that its head was composed of six segments (as in extant mandibulates), is presented by O'Flynn et al. (2023), who interpret their findings as indicating that a six-segmented head was already present in the last common ancestor of Kylinxia and the euarthropod crown group.[217]
- Redescription of Isoxys curvirostratus, incorporating data from new fossil material from the Cambrian Chiungchussu Formation (China) and focusing on the biramous appendages of this arthropod, is published by Zhang et al. (2023), who report that the appendage differentiation in Isoxys was higher than previously considered, that the trunk of I. curvirostratus was not arthrodized, and that Isoxys was one of the earliest branching members of Deuteropoda.[218]
- A study on the ontogeny of Isoxys minor, based on data from specimens from the Cambrian Shuijingtuo formation (China), is published by Ma et al. (2023), who interpret the studied fossil material as indicative of only slight morphological differences between the specimens of I. minor which might have been caused by different environment, indicative of the presence of brood care in I. minor, and well as indicative of reproductive ability at the early life stages of this arthropod.[219]
- Pates & Zamora (2023) report the discovery of arthropod carapaces representing at least two taxa (including a tuzoiid) from the Cambrian (Drumian) Murero Formation (Spain), and interpret this finding as possibly indicating that Cambrian bivalved euarthropods living at higher latitudes were larger than those from low latitudes.[220]
- New fossil material of Acanthomeridion serratum, providing new information on the anatomy of members of this species, is described by Du et al. (2023), who interpret A. anacanthus as a junior synonym of A. serratum, and interpret dorsal cephalic sutures of trilobites as more likely to have multiple origins within Artiopoda rather than a single, deep origin.[221]
- Drage, Legg & Daley (2023) describe exuviae from a marrellid marrellomorph from the Ordovician Fezouata Formation (Morocco), providing evidence of moulting behaviour distinct from that described for Marrella splendens.[222]
- A study on the morphology of early developmental stages of marrellids from the Fezouata Formation is published by Laibl et al. (2023), who report that adults and immature individuals shares the same general appendage differentiation, and avoided direct competition for food resources only by feeding on particles of different size.[223]
- New information on the anatomy of Concavicaris woodfordi, including the structure of the shield, the circulatory, digestive and reproductive systems, and the appendages, is presented by Laville et al. (2023).[224]
- Wellman et al. (2023) present data supporting a Silurian (late Wenlock) age of the "Lower Old Red Sandstone" deposits of the Midland Valley (Scotland, United Kingdom) preserving the fossil material of Pneumodesmus newmani, supporting the interpretation of this myriapod as the oldest known air-breathing land animal.[225]
- New information on the morphology of the Carboniferous millipedes Amynilyspes fatimae and Blanziulus parriati from the Montceau-les-Mines Lagerstätte (France) is presented by Lheritier et al. (2023).[226]
General research
[edit]- New, diverse fossil material of radiodonts (including indeterminate hurdiids) and euarthropods (including Thelxiope cf. T. palaeothalassia, Perspicaris? dilatus, Branchiocaris pretiosa, Tuzoia retifera, T. guntheri, Dioxycaris argenta, bradoriids and a possible indeterminate species of Naraoia) is described from the Cambrian (Wuliuan) Spence Shale (Idaho and Utah, United States) by Kimmig et al. (2023).[227]
- Naimark, Sizov & Khubanov (2023) report the discovery of a new assemblage of Cambrian arthropods from the Kimiltei site (Irkutsk Oblast, Russia), including the first records of members of Euthycarcinoidea and Synziphosurina from the Siberian platform and the first Cambrian record of Chasmataspidida from this platform.[228]
- Braddy (2023) describes a resting trace of a phyllocarid crustacean from the Miaolingian Hickory Sandstone Member of the Riley Formation (Texas, United States), names a new ichnotaxon Minterichnus shieldi, and reinterprets the arthropod body fossil associated with the resting trace as a phyllocarid rather than the oldest known chasmataspidid.[229]
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- ^ a b c García-Penas, Á.; Ferratges, F. A.; Moreno-Bedmar, J. A.; Bover-Arnal, T.; Gasca, J. M.; Aurell, M.; Zamora, S. (2023). "Decapod crustaceans from the Lower Cretaceous of Spain, with an account of new occurrences in Barremian-Aptian strata of the Maestrazgo Basin". Cretaceous Research. 150. 105576. Bibcode:2023CrRes.15005576G. doi:10.1016/j.cretres.2023.105576. S2CID 258754780.
- ^ Nyborg, T.; Garassino, A.; Vega, F. J. (2023). "Validation of Cretalamoha boweni Nyborg & Garassino (Brachyura: Homolidae) from the early Campanian, Upper Cretaceous of British Columbia, Canada". Zootaxa. 5318 (1): 148–150. doi:10.11646/zootaxa.5318.1.8. PMID 37518392. S2CID 260028035.
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