Reptilia - Ornithischia - Prismatoolithidae
Full reference: K. F. Hirsch. 1994. Upper Jurassic eggshells from the Western Interior of North America. Dinosaur Eggs and Babies, Cambridge University Press, Cambridge 137-150
Parent taxon: Ornithischia according to K. E. Mikhailov 1997
Sister taxa: Alocodon, Amtosaurus, Apulosauripus, Archaeocursor, Armatosauria, Asilisaurus, Cairanoolithidae, Chilesaurus, Delatorrichnopodidae, Enoplosauria, Fabrosauridae, Fabrosaurus, Ferganocephale, Genasauria, Gregaripus, Gyrotrisauropus, Heterodontosauridae, Heterodontosauriformes, Komlosaurus, Krzyzanowskisaurus, Laquintasaura, Lesothosauria, Lesothosaurus, Lewisuchus, Ligabueichnium, Minisauripus, Neornithischia, Pisanosaurus, Predentata, Soumyasaurus, Sulcimentisauria, Tacuarembovum, Trimucrodon, Poposauria, Stegosauroidae
Subtaxa: Laiyangoolithus Preprismatoolithus Prismatoolithus Protoceratopsidovum Sankofa Spheruprismatoolithus Trigonoolithus
Type: Prismatoolithus
Ecology: ground dwelling herbivore
Distribution:
• Cretaceous of Argentina (2 collections), Canada (8: Alberta), China (10), France (11), Japan (2), Mexico (2), Mongolia (16), Morocco (1), the Russian Federation (2), Spain (23), United States (10: Montana, New Mexico, Utah)
• Jurassic of United States (7: Colorado, Utah)
Total: 94 collections including 101 occurrences