Chondrichthyes - Heterodontoidea
Alternative spelling: Heterodontoidei
Full reference: O. P. Hay. 1902. Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179:1-868
Parent taxon: Selachii according to J. T. Thurmond and D. E. Jones 1981
See also Fedorowski 1912, Hay 1902 and Herman 1977
Sister taxa: Anacoracoidei, Asterospondyli, Centrobati, Cooperodon, Ctenacanthoidei, Fortscottella, Galeomorphi, Hammondella, Idiacanthus, Kirkella, Moreyella, Notidani, Notidanidae, Notidanoidei, Palaeosquali, Rajae, Rhinae, Rhinoraji, Scyllidae, Spinacidi, Squali, Squalimorphi, Statodonti, Tectospondyli, Trirostri, Trygonidae
Subtaxa: none
Ecology: nektonic carnivore
Distribution: there are no occurrences of Heterodontoidea in the database