†subfamily Pteraspidinae Claypole 1885 (jawless fish)
Pteraspidomorpha - Pteraspidiformes - Pteraspididae
Parent taxon: Pteraspididae according to R. H. Denison 1970
Sister taxa: Archaeoteuthis, Chiastolepis, Doryaspidinae, Ecphymaspis, Europrotaspis, Glossoidaspis, Holaspis, Kallostrakon, Mitraspis, Mylopteraspis, Palaeoteuthis, Podolaspis, Rhachiaspis, Scaphaspis, Scutellaspis, Semipodolaspis, Sphagodus
Subtaxa: none
Type: Protaspis
Ecology: planktonic suspension feeder
Distribution: found only at Northern Egan Range, near Ely (Devonian of Nevada)