Coccosteina

{{Short description|Extinct order of fishes}}

{{Automatic Taxobox

| fossil_range = Devonian

| image = C_cuspidatus.png

| image_caption = Artist's reconstruction of Coccosteus cuspidatus

| taxon = Coccosteina

| authority = Heintz, 1932

| subdivision_ranks = Superfamilies

| subdivision =

See text

}}

Coccosteina is an extinct infraorder of placoderms, armored fish most diverse during the Devonian.Heintz., Anatol, 1932, The structure of Dinichthys, a contribution to your knowledge of the Arthrodira: In: [https://archive.org/details/bashforddeanmemo01dean The Bashford Dean Memorial Volume Archaic Fishes] {{webarchive|url=https://web.archive.org/web/20130522010101/https://archive.org/details/bashforddeanmemo01dean |date=2013-05-22 }}, edited by Gudger, E. W., article IV, The American Museum of Natural History, 224pp. However, the term is no longer in use, as modern cladistical methods have produced alternative phylogenetic trees of Brachythoraci with new subdivisions.{{Cite journal |last1=Carr |first1=R.K. |last2=Hlavin |first2=W.J. |title=Two new species of Dunkleosteus Lehman, 1956, from the Ohio Shale Formation (USA, Famennian) and the Kettle Point Formation (Canada, Upper Devonian), and a cladistic analysis of the Eubrachythoraci (Placodermi, Arthrodira) |journal=Zoological Journal of the Linnean Society |volume=159 |issue=1 |pages=195-222 |year=2010 |doi=10.1111/j.1096-3642.2009.00578.x |doi-access=free }}{{Cite journal |author1=You-An Zhu |author2=Min Zhu |title=A redescription of Kiangyousteus yohii (Arthrodira: Eubrachythoraci) from the Middle Devonian of China, with remarks on the systematics of the Eubrachythoraci | journal=Zoological Journal of the Linnean Society |volume=169 |issue=4 |pages=798-819 |year=2013 |doi=10.1111/zoj12089 |doi-access= }}{{Cite journal |last1=Zhu |first1=You-An |last2=Zhu |first2=Min |last3=Wang |first3=Jun-Qing |date=1 April 2016 |title=Redescription of Yinostius major (Arthrodira: Heterostiidae) from the Lower Devonian of China, and the interrelationships of Brachythoraci |journal=Zoological Journal of the Linnean Society |volume=176 |issue=4 |pages=806–834 |doi=10.1111/zoj.12356|issn=0024-4082 |doi-access=free }}