Cosmoptychius

Cosmoptychius Temporal range: Viséan [1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Family:	† Cosmoptychiidae Gardiner, 1963
Genus:	† Cosmoptychius Traquair, 1877
Species:	†C. striatus
Binomial name
†Cosmoptychius striatus (Agassiz, 1835)
Synonyms
†Amblypterus striatusAgassiz, 1835 †CosmoptygiusTraquair, 1877 (misspelling)

Cosmoptychius is an extinct genus of freshwater and estuarine ray-finned fish that lived during the Mississippian epoch. ^{[1] [2]} It contains a single species, C. striatus from the Visean of Scotland. ^[3] It has a wide stratigraphic range in the Wardie Shale, with many specimens known. ^{[4] [5]}

Initially classified as either a palaeonisciform (a now-paraphyletic group of basal actinopterygians) ^[6] or the earliest stem-group neopterygian, it is now generally considered a stem-group actinopteran. ^[7]

References

1. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2009-02-20. Retrieved 2009-04-24.
2. Coates, M. I. (1993). "Actinopterygian and acanthodian fishes from the Viséan of East Kirkton, West Lothian, Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 84 (3–4): 317–327. Bibcode:1993EESTR..84..317C. doi:10.1017/S0263593300006131. ISSN   1755-6929.
3. "PBDB Taxon". paleobiodb.org. Retrieved 2024-06-18.
4. Gardiner, B. G. (1985). "Actinopterygian fish from the Dinantian of Foulden, Berwickshire, Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 76 (1): 61–66. doi:10.1017/S0263593300010312. ISSN   1473-7116.
5. Dornburg, Alex; Townsend, Jeffrey P.; Friedman, Matt; Near, Thomas J. (2014-08-08). "Phylogenetic informativeness reconciles ray-finned fish molecular divergence times". BMC Evolutionary Biology. 14 (1): 169. Bibcode:2014BMCEE..14..169D. doi: 10.1186/s12862-014-0169-0 . ISSN   1471-2148. PMC   4236503 . PMID   25103329.
6. Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016-02-22). Fishes of the World. Wiley. ISBN   978-1-118-34233-6.
7. Xu, Guang-Hui; Gao, Ke-Qin; Finarelli, John A. (2014-06-07). "A revision of the Middle Triassic scanilepiform fish Fukangichthys longidorsalis from Xinjiang, China, with comments on the phylogeny of the Actinopteri". Journal of Vertebrate Paleontology. 34 (4): 747–759. Bibcode:2014JVPal..34..747X. doi:10.1080/02724634.2014.837053. ISSN   0272-4634.