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: The Bashford Dean Memorial Volume Archaic Fishes , 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.
Systematics Basal genus Maideria Basal genus Xiangshuiosteus Superfamily Buchanosteoidea Family Buchanosteidae Superfamily Gemuendenaspoidea Family Gemuendenaspidae Superfamily Homosteoidea Family Homostiidae Superfamily Brachydeiroidea Family Brachydeiridae Family Leptosteidae Superfamily Coccosteoidea Family Pholidosteidae Family Coccosteidae Family Plourdosteidae Family Torosteidae Family Incisoscutidae Family Camuropiscidae Superfamily Dinichthyloidea Family Hadrosteidae Family Dinichthyidae Family Trematosteidae Family Rhachiosteidae Family Titanichthyidae Family Bungartiidae Family Selenosteidae Family Mylostomatidae
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