Chondrichthyes - Hybodontiformes - Ptychodontidae
Parent taxon: Hybodontiformes according to J. S. Nelson et al. 2016
See also Applegate 1970, Cahuzac et al. 2007, Hay 1902, Herman 1977, Jordan 1963, Thurmond and Jones 1981 and Woodward 1891
Sister taxa: Cassisodus, Doratodus, Hamiltonichthys, Hubeiodus, Hybodontoidea, Mesodmodus, Omanoselache, Onychoselache, Pseudodalatiidae, Reesodus, Steinbachodontidae, Teresodus
Subtaxa: Ptychodus
Ecology: nektonic carnivore
Distribution:
• Paleocene of United States (1: Illinois collection)
• Cretaceous of Brazil (1), Canada (7: Alberta, Manitoba, Saskatchewan), Colombia (1), the Czech Republic (2), France (3), Germany (1), India (1), Israel (1), Italy (3), Japan (8), Jordan (1), Kazakhstan (1), Lithuania (5), Mexico (2), Poland (2), the Russian Federation (1), Sweden (1), Ukraine (3), the United Kingdom (2), United States (47: Alabama, Colorado, Georgia, Iowa, Kansas, Mississippi, Montana, Nebraska, New Mexico, South Dakota, Texas)
Total: 94 collections including 143 occurrences