Placodermi - Arthrodira - Coccosteidae
Parent taxon: Coccosteoidea according to R. H. Denison 1984
See also Bryant 1932, Denison 1975, Denison 1978, Hay 1902 and Jordan 1963
Sister taxa: Gemuendenaspidae, Pholidosteidae
Subtaxa: Agassichthys Anomalichthys Aspidophorus Asteroplax Belgiosteus Brachydirus Clarkeosteus Coccosteinae Coccosteus Dickosteus Eldenosteus Lispognathus Livosteus Millerosteus Phlyctaenaspis Physichthys Plourdosteus Ponerichthys Siphonodus Watsonosteus Woodwardosteus
Ecology: nektonic carnivore
Distribution:
• Carboniferous of the United Kingdom (1 collection)
• Givetian of Belarus (1), the United Kingdom (1)
• Devonian of Belarus (2), Canada (1: Quebec), Estonia (5), Germany (1), Iran (1), Ireland (1), Latvia (5), Poland (1), the Russian Federation (3), South Africa (1), Svalbard and Jan Mayen (1), the United Kingdom (40), United States (2: Arizona, Pennsylvania)
Total: 67 collections including 75 occurrences