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 and Sepkoski 2002
Sister taxa: Acronemus, Artiodus, Dasyatiformes, Galei, Galeoidei, Hueneichthys, Hybodontida, Musteliformes, Neoselachii, Notidaniformes, 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)
• Triassic of Belgium (4), Canada (1: British Columbia), Oman (1), the United Kingdom (1), United States (2: Idaho, Nevada)
• Leonard of United States (1: Oklahoma)
• Permian of Bolivia (1), Brazil (1), China (1), Germany (9), Greenland (2), India (3), Japan (2), Oman (20), the Russian Federation (6), United States (25: Alaska, Arizona, Kansas, Nebraska, Texas, Wyoming)
• Pennsylvanian of the United Kingdom (1)
• Carboniferous to Permian of the Russian Federation (1)
• Carboniferous of Greenland (2), Japan (1), the Russian Federation (4), the United Kingdom (3), United States (64: Alabama, Arizona, Colorado, Illinois, Indiana, Kansas, Montana, Nebraska, Nevada, New Mexico, Ohio, Pennsylvania, South Dakota, Wyoming)
• Mississippian of the United Kingdom (3), United States (1: Alabama)
• Devonian of Brazil (2), the Russian Federation (3), United States (3: Ohio)
Total: 169 collections including 236 occurrences