Chondrichthyes - Orodontiformes
Full reference: R. Zangerl. 1981. Chondrichthyes I: Paleozoic Elasmobranchii. Handbook of Paleoichthyology 3a
Parent taxon: Holocephali according to R. van der Laan 2019
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Desmiodontidae, Desmiodus, Edaphodus, Eugeneodontiformes, Gregoriidae, Harpacanthidae, Helodontiformes, Holocephalomorpha, Iniopterygiformes, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Metaxyacanthus, Ageleodus, Euglossodus, Cynopodius, Mesolophodus
Subtaxa: none
Ecology: nektobenthic carnivore
Distribution:
• Permian of Brazil (1 collection), United States (4: Kansas, Texas)
• Carboniferous of the Russian Federation (1), the United Kingdom (3), United States (7: Arizona, Indiana, Kansas, Missouri)
• Devonian of United States (1: California)
Total: 17 collections each including a single occurrence