Chondrichthyes - Symmoriiformes
Alternative spelling: Symmoriida
Full reference: R. Zangerl. 1981. Chondrichthyes I: Paleozoic Elasmobranchii. Handbook of Paleoichthyology 3a
Parent taxon: Cladodontomorphi according to A. O. Ivanov et al. 2013
See also Coates and Sequeira 2001, Ginter et al. 2010, Goto et al. 1988, Lund 1986, Maisey 2008, Nelson et al. 2016, Sepkoski 2002, Williams 1985, Williams 1998 and Zangerl 1981
Sister taxa: Jalodontidae, Squatinactiformes
Subtaxa: Denaeidae Falcatidae Kawichthys Kungurodus Stemmatias Symmoriidae
Distribution:
• Miocene to Pliocene of Bolivia (1 collection)
• Miocene of Panama (2)
• Cretaceous of France (1)
• Permian of Japan (1), Kazakhstan (1), Oman (17), the Russian Federation (15), United States (36: Kansas, Nebraska, Texas)
• Carboniferous to Permian of Argentina (1)
• Carboniferous of Belgium (1), China (1), Greenland (1), the Russian Federation (4), the United Kingdom (4), United States (46: Arizona, Arkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Michigan, Missouri, Montana, Nebraska, New Mexico, Ohio, Oklahoma, South Dakota)
• Devonian of the Russian Federation (6), United States (4: Ohio)
Total: 142 collections including 180 occurrences