†family Plourdosteidae Vézina 1990 (armour-plated fish)
Placodermi - Arthrodira - Plourdosteidae
Parent taxon: Incisoscutoidea according to K. Trinajstic and K. Dennis-Bryan 2009
Sister taxon: Incisoscutidae
Subtaxa: Compagopiscis Protitanichthys
Ecology: nektonic carnivore
Distribution: