Dercetidae
| Dercetidae Temporal range: Possible Early Eocene record
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| Specimen of Dercetis | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Aulopiformes |
| Suborder: | †Enchodontoidei |
| Family: | †Dercetidae Woodward, 1901 |
| Genera | |
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See text | |
The Dercetidae are an extinct family of aulopiform fish that are known from the Late Cretaceous to the Paleocene (and possibly to the Eocene if Stratodus is a member).[1][2][3] They are among the many members of the diverse, extinct suborder Enchodontoidei, which were dominant during the Cretaceous.[4][5] Many genera evolved a very slender body plan with elongated jaws, closely converging on modern needlefish.[2][6]
Taxonomy[edit]
Initially, due to their slender appearance, dercetids were classified with the spiny eels in the order Notacanthiformes, but this was only based on their superficially similar body plans. More recent research indicates that the dercetids were related to modern lizardfish and grinners.[2]
The following genera are known:[7]
- Family †Dercetidae
- Genus †Apuliadercetis
- Genus †Benthesikyme
- Genus †Brazilodercetis
- Genus †Candelarhynchus
- Genus †Caudadercetis
- Genus †Cyranichthys
- Genus †Dercetis
- Genus †Dercetoides
- Genus †Hastichthys
- ?Genus †Kwangodercetis
- ?Genus †Leccedercetis
- ?Genus †Paradercetis
- Genus †Nardodercetis
- Genus †Ophidercetis
- Genus †Pelargorhynchus
- Genus †Rhynchodercetis
- ?Genus †Scandiadercetis
- ?Genus †Stratodus
The genus Robertichthys was previously considered a dercetid, but more recent studies suggest that it was an aspidorhynchid, a member of an entirely different group of fish.[7]
Some studies suggest that this family is paraphyletic.[4] However, others have found it to be monophyletic.[5][6]
References[edit]
- ^ "PBDB". paleobiodb.org. Retrieved 2024-01-16.
- ^ a b c Alvarado-Ortega, Jesús; Díaz-Cruz, Jesús Alberto (2021-01-01). "Hastichthys totonacus sp. nov., a North American Turonian dercetid fish (Teleostei, Aulopiformes) from the Huehuetla quarry, Puebla, Mexico". Journal of South American Earth Sciences. 105: 102900. doi:10.1016/j.jsames.2020.102900. ISSN 0895-9811.
- ^ "Stratigraphy and Paleobiology of the Upper Cretaceous-Lower Paleogene Sediments from the Trans-Saharan Seaway in Mali". MorphoBank datasets. 2019-07-01. doi:10.7934/p2735. S2CID 242354960.
- ^ a b Chida, Mori (Fall 2022). "A new species of dercetid and the assessment of the phylogeny of the Enchodontoidei (Teleostei: Aulopiformes)". ERA. Retrieved 2023-12-28.
- ^ a b Silva, Hilda M. A.; Gallo, Valéria (2011). "Taxonomic review and phylogenetic analysis of Enchodontoidei (Teleostei: Aulopiformes)". Anais da Academia Brasileira de Ciências. 83: 483–511. doi:10.1590/S0001-37652011000200010. ISSN 0001-3765.
- ^ a b Vernygora, Oksana; Murray, Alison M.; Luque, Javier; Ruge, Mary Luz Parra; Fonseca, María Euridice Paramo (2018-09-26). "A new Cretaceous dercetid fish (Neoteleostei: Aulopiformes) from the Turonian of Colombia". Journal of Systematic Palaeontology. 16 (12): 1057–1071. doi:10.1080/14772019.2017.1391884. ISSN 1477-2019.
- ^ a b Chida, Mori; Brinkman, Donald B.; Murray, Alison M. (2023-10-01). "A large, new dercetid fish (Teleostei: Aulopiformes) from the Campanian Bearpaw Formation of Alberta, Canada". Cretaceous Research. 150: 105579. doi:10.1016/j.cretres.2023.105579. ISSN 0195-6671.