Chondrichthyes - Ctenacanthiformes
Alternative spelling: Ctenacanthida
Parent taxon: Euselachii according to J. A. Long 2011
See also Ginter et al. 2010, Ginter et al. 2005, Goto and Okura 2004, Nelson et al. 2016 and Sepkoski 2002
Sister taxa: Acronemus, Artiodus, Cheirostephanus, Dasyatiformes, Favusodus, Galei, Galeoidei, Hueneichthys, Hybodonta, Hybodontiformes, Musteliformes, Neoselachii, Notidaniformes, Protacrodontiformes, Protacrodontoidea, Scyliorhiniformes, Sphenacanthidae, Squatinoidei, Squatinorajiformes, Surcaudalus, Synechodontidae
Subtaxa: Acandylacanthus Arauzia Ctenacanthidae Ctenacanthoidea Goodrichthys Heslerodidae Kaibabvenator Moyacanthus Nanoskalme Neosaivodus Pororhiza Saivodus
Ecology: nektonic carnivore
Distribution:
• Miocene of United States (1: California collection)
• Cretaceous of France (1)
• Triassic of Belgium (4), Canada (1: British Columbia), India (3), the United Kingdom (1), United States (4: Idaho, Nevada, Pennsylvania)
• Permian of Bolivia (1), Brazil (3), China (1), Germany (9), Greenland (2), India (3), Japan (2), Oman (20), the Russian Federation (7), Svalbard and Jan Mayen (1), United States (25: Alaska, Arizona, Kansas, Nebraska, Oklahoma, Texas, Wyoming)
• Carboniferous to Permian of the Russian Federation (1)
• Carboniferous of Belarus (3), Greenland (2), Ireland (1), Japan (1), the Russian Federation (5), the United Kingdom (13), United States (68: Alabama, Arizona, Colorado, Illinois, Indiana, Kansas, Montana, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, South Dakota, Wyoming)
• Devonian of Afghanistan (1), Belarus (1), Brazil (2), the Russian Federation (3), United States (3: Ohio)
Total: 193 collections including 253 occurrences