†subclass Placodermi M'Coy 1848 (armour-plated fish)
Parent taxon: Pisces according to R. H. Denison 1975
See also Bryant 1932, Dineley and Metcalf 1999, Hay 1902, Kiessling 2004, Long 2011, Säve-Söderbergh 1934 and Sepkoski 2002
Sister taxa: Actinopterygii, Actinopterygii, Andreolepis, Cephaloxeniformes, Conosaurops, Crenilepis, Cyclotomodon, Dipteriformes, Ganoidei, Iniomi, Lophosteus, Nothosoma, Pattonia, Pattonia couttsi, Preophiodon, Sarcopterygii, Tythonichthys, Charitosaurus, Rhytiodus, Merlangius, Argentinoideorum, Ptilichnus, Otolithopsis, Dipneusta, Percidarum, Lepidoleprus
Subtaxa: Acanthothoraci Antiarcha Arthrodira Austroptyctodus Brindabellaspida Campbellodus Nessariostoma Petalichthida Petalichthyida Phyllolepida Pseudopetalichthyida Ptyctodontida Rhenanida Stensioellida