†order Psammodontiformes Obruchev 1953 (chimaera)
Chondrichthyes - Psammodontiformes
Parent taxon: Holocephalomorpha according to J. A. Long 2011
See also Nelson 2006, Nelson et al. 2016 and Sepkoski 2002
Sister taxa: Chimaeriformes, Chondrenchelyiformes, Cochliodontiformes, Copodontiformes, Menaspiformes, Squalorajiformes
Subtaxa: Psammodontidae
Ecology: nektobenthic carnivore
Distribution:
• Jurassic of the United Kingdom (1 collection)
• Permian of Pakistan (1)
• Carboniferous of Egypt (1), the Russian Federation (1), Thailand (1), the United Kingdom (6), United States (3: Alabama, Montana)
Total: 14 collections including 17 occurrences