†order Cephalaspidida Moy-Thomas and Mile 1971 (vertebrate)
Petromyzontida - Cephalaspidida
Full reference: J. A. Moy-Thomas and R. S. Mile. 1971. Palaeozoic Fishes
Parent taxon: Cephalaspidomorphi according to J. A. Moy-Thomas and R. S. Mile 1971
Sister taxa: Gilpichthyidae, Pipisciidae, Galeaspidiformes, Atelaspidiformes, Ateleaspis, Cephalaspidiformes, Birkeniiformes, Pituriaspidiformes
Subtaxa: none
Ecology: fast-moving nektonic carnivore
Distribution: