Clade Galeoidei (elasmobranch)
Parent taxon: Euselachii according to D. S. Jordan 1963
See also David 1943
Sister taxa: Acronemus, Artiodus, Cheirostephanus, Dasyatiformes, Favusodus, Galei, Hueneichthys, Hybodonta, Listracanthidae, Musteliformes, Neoselachii, Notidaniformes, Protacrodontiformes, Scyliorhiniformes, Selachimorpha, Squatinoidei, Squatinorajiformes, Surcaudalus, Synechodontidae, Tuberospina
Subtaxa: Galeidae Pliotremidae
Ecology: nektonic carnivore
Distribution:
• Eocene of Italy (1 collection)
• Paleocene of United States (1: California)
Total: 2 collections each including a single occurrence