Chondrichthyes - Sclerorhynchiformes - Ptychotrygonidae
Full reference: J. Kriwet, E. V. Nunn, and S. Klug. 2009. Neoselachians (Chondrichthyes, Elasmobranchii) from the Lower and lower Upper Cretaceous of north-eastern Spain. Zoological Journal of the Linnean Society 155(2):316-347
Parent taxon: Sclerorhynchiformes according to R. van der Laan 2019
See also Guinot et al. 2012, Kriwet et al. 2009, Nelson et al. 2016 and Villalobos-Segura et al. 2019
Sister taxa: Iberotrygon, Sclerorhynchidae
Subtaxa: Asflapristis Ptychotrygon Ptychotrygonoides Texatrygon
Ecology: nektonic carnivore
Distribution:
• Paleocene of United States (1: Montana collection)
• Cretaceous of Argentina (1), Austria (1), Canada (1: Alberta), Egypt (4), France (13), Jordan (4), Mexico (2), Morocco (1), Spain (2), United States (91: Alabama, Arkansas, Colorado, Delaware, Georgia, Kansas, Maryland, Mississippi, Montana, Nebraska, New Jersey, New Mexico, North Carolina, North Dakota, South Carolina, South Dakota, Texas, Utah, Wyoming), Uzbekistan (1)
Total: 122 collections including 191 occurrences