Chondrichthyes - Xenacanthida - Orthacanthidae
Full reference: D. Heyler and C. Poplin. 1989. Systematics and relationships among the Xenacanthiformes (Pisces, Chondrichthyes) in the light of Carboniferous and Permian French materal. Acta Musei Reginaehradecensis S. A. Scientiae Naturales 22:69-78
Parent taxon: Xenacanthida according to U. H. J. Heidtke 1998
Sister taxon: Anodontacanthus
Subtaxa: Orthacanthus
Type: Orthacanthus
Ecology: nektonic carnivore
Distribution:
• Cretaceous of Japan (1 collection)
• Jurassic of France (1)
• Triassic of Poland (1)
• Permian of France (1), United States (15: Kansas, Oklahoma, Pennsylvania, Texas)
• Carboniferous to Permian of United States (1: Utah)
• Carboniferous of the United Kingdom (9), United States (8: Arizona, Illinois, Kansas, Nebraska, New Mexico, West Virginia)
• Devonian of Canada (2: New Brunswick)
Total: 39 collections including 53 occurrences