2024 in paleoichthyology

From Wikipedia, the free encyclopedia
List of years in paleoichthyology
In paleontology
2021
2022
2023
2024
2025
2026
2027
In paleobotany
2021
2022
2023
2024
2025
2026
2027
In arthropod paleontology
2021
2022
2023
2024
2025
2026
2027
In paleoentomology
2021
2022
2023
2024
2025
2026
2027
In paleomalacology
2021
2022
2023
2024
2025
2026
2027
In reptile paleontology
2021
2022
2023
2024
2025
2026
2027
In archosaur paleontology
2021
2022
2023
2024
2025
2026
2027
In paleomammalogy
2021
2022
2023
2024
2025
2026
2027

This list of fossil fish research presented in 2024 is a list of new taxa of jawless vertebrates, placoderms, acanthodians, fossil cartilaginous fishes, bony fishes, and other fishes that were described during the year, as well as other significant discoveries and events related to paleoichthyology that occurred in 2024.

Jawless vertebrates[edit]

Name Novelty Status Authors Age Type locality Location Notes Images

Caeruleum gracilis[1]

Sp. nov

Valid

Huang et al.

Early Cretaceous

Jiufotang Formation

 China

A lamprey.

Changxingaspis nianzhongi[2]

Sp. nov

Li et al.

Silurian

Tataertag Formation

 China

A member of Galeaspida belonging to the family Xiushuiaspidae.

Jawless vertebrate research[edit]

  • Brookfield (2024) interprets Jamoytius kerwoodi as a probable detritivore or herbivore feeding on Dictyocaris (interpreted by the author as possible algal thalli).[3]
  • Description of the feeding apparatus of Rhinopteraspis dunensis, interpreted as composed of 13 plates that were capable of rotating around the transverse axis, is published by Dearden et al. (2024), who interpret R. dunensis as a suspension or deposit feeder.[4]
  • Shan et al. (2024) describe new fossil material of "Dongfangaspis" qujingensis and Damaspis vartus from the Devonian Xishancun Formation (China), and reinterpret "D." qujingensis as a member of the genus Damaspis.[5]

Placoderms[edit]

Placoderm research[edit]

  • Jobbins et al. (2024) describe new fossil material of Alienacanthus malkowskii, providing evidence of elongation of the lower jaw which was twice as long as the skull.[6]

Acanthodians[edit]

Name Novelty Status Authors Age Type locality Location Notes Images

Gyracanthides riniensis[7]

Sp. nov

Valid

Gess & Burrow

Devonian (Famennian)

Waterloo Farm lagerstätte

 South Africa

A gyracanthid acanthodian.

Gyracanthus? jasperi[8]

Sp. nov

Valid

Snyder, Burrow & Turner

Carboniferous (Mississippian)

Ste. Genevieve Formation

 United States
( Iowa)

A gyracanthid acanthodian.

Cartilaginous fishes[edit]

Name Novelty Status Authors Age Type locality Country Notes Images

Aellopobatis[9]

Gen. et sp. nov

Valid

Türtscher et al.

Late Jurassic (Tithonian)

 Germany

A member of Batomorphii belonging to the family Spathobatidae. The type species is A. bavarica.

Amtaaguar[10]

Gen. et comb. nov

De Pasqua et al.

Neogene

 Argentina
 France
 United States

An eagle ray. The type species is "Myliobatis" crassus (Gervais, 1859).

Belgabatis[11]

Gen. et comb. nov

Valid

Reinecke et al.

Paleogene

 Belgium

A dasyatoid batomorph. The type species is "Dasyatis" thierryi Smith (1999).

Casierabatis[11]

Gen. et sp. comb. nov

Valid

Reinecke et al.

Paleogene

 Belgium

A dasyatoid batomorph. Genus includes new species C. lambrechtsi, as well as "Trygon" jaekeli Leriche (1905).

Centrodeania[12]

Gen. et 2 sp. nov

Valid

Feichtinger et al.

Paleocene (Danian)

Oiching Formation

 Austria

A member of the family Centrophoridae. The type species is C. rugosa; genus also includes C. annae.

Columnaodus[13]

Gen. et sp. nov

Valid

Cicimurri et al.

Carboniferous (Mississippian)

Contact horizon between Burlington and Keokuk Limestones

 United States
( Illinois
 Iowa)

A member of Hybodontoidea of uncertain affinities. The type species is C. witzkei.

Cosmoselachus[14]

Gen. et sp. nov

Valid

Bronson et al.

Carboniferous (Mississippian)

Fayetteville Shale

 United States
( Arkansas)

A member of the family Falcatidae. The type species is C. mehlingi.

Essexraja[11]

Gen. et sp. nov

Valid

Reinecke et al.

Eocene

London Clay

 United Kingdom

A batomorph. The type species is E. ypresiensis.

Eurasiabatis[11]

Gen. et sp. nov

Valid

Reinecke et al.

Paleogene

Tielt Formation

 Belgium

A batomorph. The type species is E. occlusostriata.

Glaucopristis[11]

Gen. et comb. nov

Valid

Reinecke et al.

Paleogene

 Belgium

A rhinopristiform batomorph. The type species is "Rhinobatus" bruxelliensis Jaekel (1894).

Glikmanius careforum[15]

Sp. nov

Valid

Hodnett et al.

Carboniferous (Mississippian)

 United States
( Alabama
 Kentucky)

Incognitorapax[12]

Gen. et sp. nov

Valid

Feichtinger et al.

Late Cretaceous (Maastrichtian) and Paleocene (Danian)

 Austria
 Germany

A member of the family Etmopteridae. The type species is I. fernsebneri.

Orthacanthus adamas[16]

Nom. nov

Valid

Babcock

Carboniferous

Upper Freeport Coal

 United States
( Ohio)

A replacement name for Orthacanthus gracilis Newberry (1875).

Orthacanthus lintonensis[16]

Nom. nov

Valid

Babcock

Carboniferous

Upper Freeport Coal

 United States
( Ohio)

A replacement name for Diplodus gracilis Newberry (1857).

Palaeohypotodus bizzocoi[17]

Sp. nov

Valid

Ebersole, Cicimurri & Harrell

Paleocene (Danian)

Porters Creek Formation

 United States
( Alabama)

A member of Lamniformes belonging to the family Jaekelotodontidae.

Parvodus ominechonensis[18]

Sp. nov

Valid

Breeden et al.

Late Triassic (Carnian)

Momonoki Formation

 Japan

A lonchidiid hybodontiform.

Pteroscyllium downesi[19]

Sp. nov

Valid

Duffin & Batchelor

Early Cretaceous (Aptian)

Atherfield Clay Formation

 United Kingdom

A carcharhiniform shark with affinities with catsharks.

Scyliorhinus alaformis[12]

Sp. nov

Valid

Feichtinger et al.

Paleocene (Danian)

Oiching Formation

 Austria

A species of Scyliorhinus.

Serratodasyatis[11]

Gen. et comb. nov

Valid

Reinecke et al.

Paleogene

 Belgium

A dasyatoid batomorph. The type species is "Dasyatis" tricuspidatus Casier (1946).

Sheppeytrygon[11]

Gen. et comb. nov

Valid

Reinecke et al.

Eocene

London Clay

 United Kingdom

A dasyatoid batomorph. The type species is "Dasyatis" davisi Casier (1966).

Troglocladodus[15]

Gen. et sp. nov

Valid

Hodnett et al.

Carboniferous (Mississippian)

 United States
( Alabama
 Kentucky)

A ctenacanthid. Genus includes T. trimblei.

Vectiscyllium[19]

Gen. et sp. nov

Valid

Duffin & Batchelor

Early Cretaceous (Aptian)

Atherfield Clay Formation

 United Kingdom

A carcharhiniform shark with affinities with catsharks. The type species is V. atherfieldensis.

Xampylodon diastemacron[20]

Sp. nov

Dos Santos et al.

Late Cretaceous (Maastrichtian)

Lopez de Bertodano Formation

Antarctica

A cow shark.

Cartilaginous fish research[edit]

  • Schnetz et al. (2024) study the completeness of the Paleozoic fossil record of chondrichthyans, finding it to be significantly lower compared to other investigated vertebrate groups.[21]
  • A study on the diversification of chondrichthyans throughout the Paleozoic is published by Schnetz et al. (2024), who report evidence indicative of two increases of diversification rates in the earliest Devonian and in the earliest Carboniferous,and of dispersal into deeper-water environments in the aftermath of the Hangenberg event.[22]
  • A diverse assemblage of cartilaginous fish fossils is described from the Eocene Osinovaya Formation (Rostov Oblast, Russia) by Popov et al. (2024).[23]
  • The oldest fossil material of members of the genus Strophodus from Gondwana reported to date is described from the ?Early to Middle Jurassic succession of Kachchh Basin (India) by Bhosale et al. (2024).[24]
  • Cuny & Chanthasit (2024) describe egg capsules of Palaeoxyris sp. from the Jurassic Phu Kradung Formation (Thailand), interpreted as indicating that at least some hybodont sharks in Jurassic Thailand reproduced in fresh waters.[25]
  • Vullo et al. (2024) describe new fossil material of Ptychodus from the Upper Cretaceous strata in Mexico, providing evidence that Ptychodus was a high-speed mackerel shark that likely fed on nektonic hard-shelled prey such as ammonites and sea turtles.[26]
  • Shimada et al. (2024) describe two isolated teeth of Megalolamna paradoxodon from the Miocene Calvert Formation (Maryland, United States), representing the northernmost record of Megalolamna reported to date, and a tooth from the Oligocene Chandler Bridge Formation (South Carolina, United States) which might represent the geologically oldest record of a member of the genus Megalolamna reported to date.[27]
  • Sternes et al. (2024) reevaluate the accuracy of the body form of Otodus megalodon inferred by Cooper et al. (2022),[28] compare an incomplete vertebral column of a specimen of O. megalodon from the Miocene of Belgium with corresponding parts of the vertebral columns of extant white sharks, and argue that O. megalodon had an elongated body relative to the body of the white shark.[29]
  • The first fossil tooth of a shark (great white shark) embedded in a seal bone reported to date is described from the Peace River Formation (Florida, United States) by Godfrey et al. (2024).[30]
  • Greenfield (2024) coins the name Arthrobatidae as a replacement for the invalid name of the possible batomorph family Arthropteridae.[31]

Ray-finned fishes[edit]

Name Novelty Status Authors Age Type locality Location Notes Images

Afrocascudo[32]

Gen. et sp. nov

Valid

Brito et al.

Late Cretaceous

Kem Kem Group
(Douira Formation)

 Morocco

A member of the family Loricariidae. The type species is A. saharaensis.

Amia basiloides[33]

Sp. nov

Brownstein & Near

Paleocene

Fort Union Formation

 United States
( Montana)

A species of Amia.

Angiolinia[34]

Gen. et sp. nov

Valid

Carnevale & Tyler

Eocene

Monte Bolca Lagerstätte

 Italy

A member of the family Zanclidae. The type species is A. mirabilis.

Barschichthys[35]

Gen. et sp. nov

Valid

Arratia & Schultze

Middle Triassic (Anisian)

Muschelkalk

 Germany

A member of Teleosteomorpha, the type genus of the new family Barschichthyidae. The type species is B. ruedersdorfensis.

Beksinskiella[36]

Gen. et comb. nov

Valid

Granica, Bieńkowska-Wasiluk & Pałdyna

Oligocene

 Czech Republic
 Poland
 Ukraine

A member of Clupeoidei of uncertain affinities. The type species is "Meletta" longimana Heckel (1850).

Cretapantodon[37]

Gen. et sp. nov

Valid

Taverne

Late Cretaceous (Cenomanian)

 Lebanon

A member of the family Pantodontidae. The type species is C. polli.

Dapalis pauciserratus[38]

Sp. nov

In press

Ahnelt, Bradić-Milinović & Schwarzhans

Oligocene

 Serbia

Gregarialepis[39]

Gen. et sp. nov

Valid

Bakaev & Sergienko in Bakaev

Permian

Leninsk Formation

 Russia

A member of Elonichthyiformes. The type species is G. binaria.

Lates odessanus[40]

Sp. nov

Kovalchuk et al.

Miocene

 Ukraine

A species of Lates.

Macroprosopon[41]

Gen. et sp. nov

Valid

Capobianco, Zouhri & Friedman

Eocene (Ypresian)

Ouled Abdoun Basin

 Morocco

A member of the family Osteoglossidae belonging to the subfamily Phareodontinae. The type species is M. hiltoni.

Megalomatia[42]

Gen. et sp. nov

Valid

Kim et al.

Late Triassic

Amisan Formation

 South Korea

A basal ray-finned fish. The type species is M. minima.

Planalepis[39]

Gen. et sp. nov

Valid

Bakaev & Sergienko in Bakaev

Permian

Tailugan Formation

 Russia

A member of Elonichthyiformes. The type species is P. diserta.

Pseudopholidoctenus[35]

Gen. et sp. nov

Valid

Arratia & Schultze

Middle Triassic (Anisian)

Muschelkalk

 Germany

A member of the family Pholidophoridae. The type species is P. germanicus.

Ruedersdorfia[35]

Gen. et sp. nov

Valid

Arratia & Schultze

Middle Triassic (Anisian)

Muschelkalk

 Germany

A member of Teleosteomorpha of uncertain affinities. The type species is R. berlinensis.

Toarcocephalus[43]

Gen. et sp. nov

Valid

Cooper, López-Arbarello & Maxwell

Early Jurassic (Toarcian)

Posidonia Shale

 Germany

A member of the family Coccolepididae. The type species is T. morlok.

Otolith taxa[edit]

Name Novelty Status Authors Age Type locality Location Notes Images

Advenasciaena[44]

Gen. et sp. nov

Valid

Kocsis et al.

Miocene

Miri Formation

 Brunei

A member of the family Sciaenidae. The type species is A. bruneiana.

Akko canoa[45]

Sp. nov

Schwarzhans & Aguilera

Pleistocene (Gelasian)

Canoa Formation

 Ecuador

A species of Akko.

Akko lobata[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Yaviza Formation

 Panama

A species of Akko.

Antilligobius collinsae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian) to Pleistocene (Gelasian)

Escudo de Veraguas Formation

 Costa Rica
 Ecuador
 Panama
 Trinidad and Tobago
 Venezuela

A species of Antilligobius.

Aruma atlantica[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Piacenzian) to Pleistocene (Calabrian)

Bastimentos Formation

 Panama

A species of Aruma.

Atrobucca borneensis[44]

Sp. nov

Valid

Kocsis et al.

Miocene

Seria Formation

 Brunei

A species of Atrobucca.

Barbulifer amplus[45]

Sp. nov

Schwarzhans & Aguilera

Pleistocene (Gelasian and Calabrian)

Swan Cay Formation

 Panama

A species of Barbulifer.

Bollmannia angosturae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Angostura Formation

 Ecuador
 Panama

A species of Bollmannia.

Bollmannia baldwinae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Langhian to Messinian)

Yaviza Formation

 Panama
 Trinidad and Tobago
 Venezuela

A species of Bollmannia.

Bollmannia cubaguana[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cubagua Formation

 Venezuela

A species of Bollmannia.

Bollmannia ornatissima[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Yaviza Formation

 Panama
 Trinidad and Tobago

A species of Bollmannia.

Bollmannia? paraguanaensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Burdigalian)

Cantaure Formation

 Panama
 Venezuela

Possibly a species of Bollmannia.

Bollmannia propensa[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Onzole Formation

 Ecuador
 Panama

A species of Bollmannia.

Bollmannia trinidadensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Burdigalian and Langhian)

Brasso Formation

 Trinidad and Tobago
 Venezuela

A species of Bollmannia.

Bollmannia venezuelana[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Langhian to Tortonian)

Ojo de Agua Formation

 Trinidad and Tobago
 Venezuela

A species of Bollmannia.

Brassoichthys[45]

Gen. et sp. nov

Schwarzhans & Aguilera

Miocene (Langhian)

Brasso Formation

 Trinidad and Tobago

A goby. The type species is B. tornabenei.

Bruneisciaena[44]

Gen. et sp. nov

Valid

Kocsis et al.

Miocene

Miri Formation

 Brunei

A member of the family Sciaenidae. The type species is B. schwarzhansi.

Chriolepis altus[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Yaviza Formation

 Panama

A species of Chriolepis.

Chriolepis balboa[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Angostura Formation

 Ecuador
 Panama

A species of Chriolepis.

Coryphopterus cuevae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Tuira Formation

 Panama

A species of Coryphopterus.

Coryphopterus rodriguezi[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Chucunaque Formation

 Panama

A species of Coryphopterus.

Coryphopterus xenosus[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Messinian) and Pliocene (Zanclean)

Cubagua Formation

 Trinidad and Tobago
 Venezuela

A species of Coryphopterus.

Ctenogobius darienensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Yaviza Formation

 Panama

A species of Ctenogobius.

Cubaguanichthys[45]

Gen. et sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cubagua Formation

 Venezuela

A goby. The type species is C. lanceolatus.

Diaphus ichishiensis[46]

Sp. nov

Valid

Tsuchiya et al.

Miocene

 Japan

A species of Diaphus.

Evermannia chiriquiensis[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cayo Agua Formation

 Panama

A species of Evermannia.

Evermannia? problematica[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Burdigalian and Tortonian)

Cantaure Formation

 Panama
 Venezuela

Possibly a species of Evermannia.

Gillichthys caribbaeus[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Manzanilla Formation

 Trinidad and Tobago

A species of Gillichthys.

Gnatholepis gunae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Gatun Formation

 Panama

A species of Gnatholepis.

Gobiosoma emberae[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Messinian)

Chucunaque Formation

 Panama

A species of Gobiosoma.

Gobulus limonensis[45]

Sp. nov

Schwarzhans & Aguilera

Pleistocene (Gelasian)

Moin Formation

 Costa Rica

A species of Gobulus.

Ilypnus arayanensis[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cubagua Formation

 Venezuela

A species of Ilypnus.

Magnogobius[45]

Gen. et 2 sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian) to Pleistocene (Gelasian)

Cercado Formation

 Costa Rica
 Dominican Republic
 Panama

A goby. The type species is M. grandis; genus also includes M. costaricensis.

Microgobius aphioides[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cubagua Formation

 Panama
 Trinidad and Tobago
 Venezuela

A species of Microgobius.

Microgobius camur[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean) to Pleistocene (Calabrian)

Escudo de Veraguas Formation

 Costa Rica
 Panama

A species of Microgobius.

Microgobius cantaurensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Burdigalian to Tortonian)

Cantaure Formation

 Panama
 Venezuela

A species of Microgobius.

Microgobius chocorum[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Tuira Formation

 Panama
 Trinidad and Tobago

A species of Microgobius.

Microgobius cumana[45]

Sp. nov

Schwarzhans & Aguilera

Pleistocene (Calabrian)

Cumaná Formation

 Venezuela

A species of Microgobius.

Microgobius ecuadorensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Angostura Formation

 Ecuador
 Panama

A species of Microgobius.

Microgobius glaber[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Manzanilla Formation

 Dominican Republic
 Panama
 Trinidad and Tobago

A species of Microgobius.

Microgobius pezoldi[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Chucunaque Formation

 Costa Rica
 Ecuador
 Panama
 Trinidad and Tobago

A species of Microgobius.

Microgobius pirabasensis[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Aquitanian to Burdigalian)

Pirabas Formation

 Brazil

A species of Microgobius.

Microgobius praeglaber[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Langhian to Tortonian)

Brasso Formation

 Panama
 Trinidad and Tobago

A species of Microgobius.

Microgobius robertsoni[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Aquitanian to Burdigalian)

Cantaure Formation

 Brazil
 Dominican Republic
 Trinidad and Tobago
 Venezuela

A species of Microgobius.

Microgobius rohri[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Burdigalian)

Brasso Formation

 Trinidad and Tobago

A species of Microgobius.

Microgobius verecundus[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian to Messinian)

Tuira Formation

 Ecuador
 Panama
 Trinidad and Tobago

A species of Microgobius.

Myctophum isense[46]

Sp. nov

Valid

Tsuchiya et al.

Miocene

 Japan

A species of Myctophum.

Nezumia armentrouti[47]

Sp. nov

Stringer & Welton

Oligocene

Lincoln Creek Formation

 United States
( Washington)

A species of Nezumia.

Nibea ambugensis[44]

Sp. nov

Valid

Kocsis et al.

Miocene

Seria Formation

 Brunei

A species of Nibea.

Nibea stintoni[44]

Sp. nov

Valid

Kocsis et al.

Miocene

Miri Formation

 Brunei

A species of Nibea.

Palatogobius magnus[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cayo Agua Formation

 Panama

A species of Palatogobius.

Palatogobius pacificus[45]

Sp. nov

Schwarzhans & Aguilera

Pleistocene (Calabrian)

Armuelles Formation

 Panama

A species of Palatogobius.

Palatogobius vantasselli[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian and Messinian)

Manzanilla Formation

 Trinidad and Tobago

A species of Palatogobius.

Parrella lucida[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Manzanilla Formation

 Trinidad and Tobago
 Venezuela

A species of Parrella.

Proparrella[45]

Gen. et 2 sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian) to Pliocene (Zanclean)

Tuira Formation

 Ecuador
 Panama
 Trinidad and Tobago
 Venezuela

A goby. The type species is P. darienensis; genus also includes P. pusilla.

Protonibea nolfi[44]

Sp. nov

Valid

Kocsis et al.

Miocene

Miri Formation

 Brunei

A species of Protonibea.

Quietula rueberi[45]

Sp. nov

Schwarzhans & Aguilera

Miocene (Tortonian)

Manzanilla Formation

 Trinidad and Tobago

A species of Quietula.

Varicus pliocenicus[45]

Sp. nov

Schwarzhans & Aguilera

Pliocene (Zanclean)

Cubagua Formation

 Venezuela

A species of Varicus.

Vinciguerria rotunda[46]

Sp. nov

Valid

Tsuchiya et al.

Miocene

 Japan

A species of Vinciguerria.

Ray-finned fish research[edit]

  • New, rank-free classification of extant and extinct ray-finned fishes is presented by Near & Thacker (2024).[48]
  • Kumar et al. (2024) describe fossil material of a member of the genus Cylindracanthus from the Eocene Naredi Formation (India), extending known geographical distribution of members of the genus.[49]
  • Cavin et al. (2024) describe fossil material of a large-bodied ray-finned fish from a Lower Triassic outcrop in northern Dobrogea (Romania), with anatomy interpreted as indicative of affinities with Polzbergiidae, and interpret the studied fossils as belonging to the earliest known large, specialized, durophagous neopterygian.[50]
  • Review of the fossil record of non-marine members of Pycnodontiformes is published by Cawley & Kriwet (2024), who report that the incursions of pycnodontiforms into brackish and freshwater habitats increased during the Cretaceous period, when the rising sea levels might have made it easier for marine fishes to colonize continental environments.[51]
  • Revision of evidence of growth and aging in the fossil material of pycnodonts is published by Capasso (2024), who find no evidence for a single overall pattern of somatic growth, but reports evidence of specific changes which seem to be common in the studied pycnodonts.[52]
  • Weis et al. (2024) study gut contents of pachycormid specimens from the Toarcian strata in Luxembourg, and report that the studied pachycormids fed on octobrachian cephalopods.[53]
  • Cooper (2024) describes fossil material of Pachycormus macropterus from the Toarcian strata in Normandy (France) representing the first direct evidence of cannibalism in a pachycormiform fish reported to date.[54]
  • Redescription of Aphnelepis australis, based on data from a new specimen from the Talbragar fossil site (Australia), is published by Bean (2024), who assigns A. australis to the teleost family Archaeomaenidae.[55]
  • Bennett (2024) describes a series of caudal vertebrae of an ichthyodectiform from the Upper Cretaceous Niobrara Formation (Kansas, United States), preserved with pathologies unknown in extant and fossil fishes but sharing similarities with diffuse idiopathic skeletal hyperostosis and spondylosis deformans of mammals, and interprets the studied pathologies as caused by combined bacterial and fungal infections, affecting the swimming abilities of the studied fish and likely ultimately resulting in its death.[56]
  • Cantalice et al. (2024) describe fossil material of a previously unknown albuliform from the Campanian strata from the Múzquiz Lagerstätte (Austin Group; Coahuila, Mexico), estimated to be approximately 3,9 metres long and representing the largest albuliform reported to date.[57]
  • Claeson et al. (2024) present a new reconstruction of Oncorhynchus rastrosus, interpreting its enlarged teeth as projecting laterally like tusks.[58]
  • Redescription of Whitephippus tamensis is published by Davesne & Andrews et al. (2024), who interpret this taxon as an early member of Lampriformes, likely related to extant opahs and oarfishes and providing the earliest known evidence of adaptation of lampriforms to the pelagic environment.[59]
  • Laine et al. (2024) sequence three-spined stickleback genomes from Late Pleistocene sediments from the Jossavannet lake (Finnmark, Norway), who identify more marine- than freshwater-associated ancestry in the studied genomes, but also find evidence that freshwater-associated alleles were already established at known loci of large effect during the brackish phase of the formation of the lake.[60]
  • Miyata et al. (2024) describe an assemblage of marine fish otoliths from the Lower Cretaceous Kimigahama Formation (Japan), including the oldest known fossil material of members of the family Ichthyotringidae, as well as of otoliths of pterothrissine bonefishes, elopiforms and herring smelts indicative of cosmopolitan distribution of these groups during the Early Cretaceous.[61]
  • Evidence from the skeletal and otolith fossil record, interpreted as indicative of presence of rich and diverse teleost assemblages in known Maastrichtian marine settings which were significantly affected by the Cretaceous–Paleogene extinction event, is presented by Schwarzhans, Carnevale & Stringer (2024), who also find that perciforms and related groups, ophidiiforms and gadiforms underwent an explosive radiation and diversification in the early Paleogene.[62]

Lobe-finned fishes[edit]

Name Novelty Status Authors Age Type locality Location Notes Images

Harajicadectes[63]

Gen. et sp. nov

Valid

Choo et al.

Devonian (Givetian–Frasnian)

Parke Siltstone

 Australia

A basal member of Tetrapodomorpha. The type species is H. zhumini.

Jemalongia[64]

Gen. et sp. nov

Young

Devonian

Cloghnan Shale

 Australia

A probable member of Porolepiformes. The type species is J. ritchiei.

Lobe-finned fish research[edit]

  • Cupello et al. (2024) describe pulmonary vessels in a calcified lung of a specimen of Macropoma mantelli from the Upper Cretaceous Chalk Formation (United Kingdom) and in extant coelacanth, confirming the air-breathing function of the tubular structure in the fossil coelacanth specimens called the calcified organ, and interpret coelacanths as having pulmonary arterie homologous to the same paired branches of the air-filled organs (including gas bladders) of other bony fishes.[65]
  • Stewart et al. (2024) describe the anatomy of the axial skeleton of Tiktaalik roseae, providing evidence of the appearance of the evolution of increased mobility at the head-trunk boundary prior to the origin of limbs, as well as evidence of the presence of derived features of the anatomy of the ribs that were previously known only from limbed taxa, and interpret the anatomy of T. roseae as indicative of a locomotor capacity intermediate between those of other elpistostegalians and those of limbed vertebrates.[66]

General research[edit]

References[edit]

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