†order Xenacanthiformes Berg 1955 (elasmobranch)

Chondrichthyes - Xenacanthiformes

Parent taxon: Xenacanthimorpha according to J. A. Long 2011

See also Cappetta 1987, Ginter et al. 2010, Heckert 2004 and Murry 1989

Sister taxon: Bransonelliformes

Subtaxa: Diplodoselachidae Xenacanthidae Xenosynechodontidae

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Ecology: nektobenthic carnivore

Distribution:

• Cretaceous of Japan (1 collection)

• Jurassic of France (1)

• Triassic of Australia (2), Austria (1), India (1), Poland (2), United States (13: Arizona, New Mexico, Texas)

• Tatarian of the Russian Federation (5)

• Leonard of United States (8: Oklahoma, Texas)

• Wolfcamp of United States (7: New Mexico, Texas, Utah)

• Permian of Brazil (1), the Czech Republic (2), France (1), Germany (1), Norway (1), the Russian Federation (3), United States (28: Kansas, Oklahoma, Pennsylvania, Texas)

• Pennsylvanian of the United Kingdom (1)

• Carboniferous to Permian of United States (1: New Mexico)

• Carboniferous of France (1), the United Kingdom (12), United States (4: Arizona, Nebraska, West Virginia)

• Devonian of Canada (1: New Brunswick)

Total: 98 collections including 123 occurrences

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