Full reference: L. Agassiz. 1843. Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel xxxii-188
Parent taxon: Vertebrata according to M. Dumbrava and A. Blieck 2005
Sister taxa: Agnatha, Ammopus, Apedolepis, Artenolepis, Auchenaspis, Calibarichnus, Cephalaspidomorpha, Galeaspida, Gallegosichnus, Gnathostomata, Herpetichthyes, Hoplichnus, Hypichthyes, Ingenierichnus, Larnovaspis, Myzichthyes, Pachycardia, Palaciosichnus, Palaeaspis, Pituriaspida, Rogerbaletichnus, Teleosti, Toxichnus, Trihamus
Subtaxa: Cephalaspis campbelltonensis, Cephalaspis dawsoni, Cephalaspis laticeps, Cephalaspis lightbodii, Cephalaspis lyelli, Cephalaspis murchisoni, Cephalaspis pagei, Cephalaspis powriei, Cephalaspis salweyi
Ecology: