†family Brachydeiridae Gross 1932 (armour-plated fish)
Placodermi - Arthrodira - Brachydeiridae
Parent taxon: Brachydeiroidea according to R. H. Denison 1984
See also Denison 1975 and Denison 1978
Sister taxon: Leptosteidae
Subtaxa: Brachydeirus Oxyosteus Synauchenia
Ecology: nektonic carnivore
Distribution: