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)
• Devonian of Belarus (2), Canada (1: Quebec), Estonia (5), Germany (1), Ireland (1), Latvia (5), Poland (1), the Russian Federation (1), South Africa (1), Svalbard and Jan Mayen (1), the United Kingdom (1), United States (1: Pennsylvania)
Total: 23 collections including 28 occurrences