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, Tuberospina
Subtaxa: Acandylacanthus Arauzia Ctenacanthidae Ctenacanthoidea Dracopristis 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), Pakistan (1), 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 (70: Alabama, Arizona, Colorado, Illinois, Indiana, Kansas, Montana, Nebraska, Nevada, New Mexico, Ohio, Oklahoma, Pennsylvania, South Dakota, Texas, Wyoming)
• Devonian of Afghanistan (1), Australia (1), Belarus (1), Brazil (2), Germany (1), Iran (1), Poland (1), the Russian Federation (3), United States (5: Michigan, Ohio)
Total: 202 collections including 264 occurrences