Extinct genus of fishes
Cosmolepis is an extinct genus of prehistoric marine ray-finned fish that lived during the Early Jurassic epoch .[ 2] It contains a single species, C. ornatus from the Blue Lias in what is now England. It is the only member of the family Cosmolepididae .[ 1] [ 3]
It was formerly placed in the Palaeonisciformes , a group of basal ray-finned fishes that is now considered to be paraphyletic .[ 4] [ 5] It is distinctive for its well-mineralized scales covered in ganoine . Its cheek and jaws have striated ridges of enamel.[ 6]
Specimens from the Moltrasio Formation of Osteno , Italy have been placed in this species based on non-reliable morphological features common among many "palaeoniscoid " fish, and thus may not be representatives of this taxon.[ 7]
See also
References
^ a b Schultze, Hans-Peter ; Mickle, Kathryn E.; Poplin, Cecile; Hilton, Eric J.; Grande, Lance (2021). Handbook of Paleoichthyology, 8A. Actinopterygii I. Palaeoniscimorpha, Stem Neopterygii, Chondrostei . Dr. Friedrich Pfeil, München. p. 299. ISBN 978-3-89937-272-4 .
^ "PBDB Taxon" . paleobiodb.org . Retrieved 2024-06-18 .
^ Laan, Richard van der (2018-10-11). "Family-group names of fossil fishes" . European Journal of Taxonomy (466). doi :10.5852/ejt.2018.466 . ISSN 2118-9773 .
^ Schaeffer, Bobb. "The palaeoniscoid fish Turseodus from the Upper Triassic Newark group. American Museum novitates ; no. 1581" . Biodiversity Heritage Library . Retrieved 2024-06-18 .
^ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016-02-22). Fishes of the World . Wiley. ISBN 978-1-118-34233-6 .
^ Cooper, Samuel L. A.; López-Arbarello, Adriana; Maxwell, Erin E. (2024-04-15). "First occurrence of a †coccolepidid fish (?Chondrostei: †Coccolepididae) from the Upper Lias (Toarcian, Early Jurassic) of southern Germany" . Palaeontologia Electronica . 27 (1): 1–25. doi :10.26879/1326 . ISSN 1094-8074 .
^ Franceschi, Fabio; Marrama, Giuseppe; Carnevale, Giorgio (2024). "The enigmatic "palaeoniscoid" fishes from the Lower Jurassic (Sinemurian) of the Southern Alps (Osteno, Como, Italy)" (PDF) . Paleodays . XXIV (4): 62.