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: Dinosauria according to M. T. Carrano 2025
Sister taxa: Ancistrodon, Astrodon pusillus, Carnosauriformes, Dictyoolithidae, Diplodocia, Dongyangoolithidae, Dystrophaeidae, Fusioolithidae, Gigantosauropus, Harpagosauria, Herreravia, Huanglongpus, Iguanodonichnus, Lagunculapes, Megalosauridae, Mirsosauropus, Mosaicoolithus, Neosauropus, Nyasasaurus, Omosaurus phillipsi, Ornithischiformes, Paleodinosauria, Phytodinosauria, Phytophagi, Polyclonoolithidae, Postpubici, Praepubici, Saurischia, Sauropodichnus, Similifaveoloolithidae, Sinoichnites, Stalicoolithidae, Therophagi, Theropoda, Therosauria, Toyamasauripus, Tretospondylia, Xiphopeza, Youngoolithidae, Yunnanpus, Ornithischia
Subtaxa: Laiyangoolithus Preprismatoolithus Prismatoolithus Protoceratopsidovum Sankofa Spheruprismatoolithus Trigonoolithus
Type: Preprismatoolithus
Ecology:
Distribution:
• Cretaceous of Argentina (1 collection), Canada (8: Alberta), China (10), France (11), Japan (2), Mexico (1), Mongolia (12), Morocco (1), the Russian Federation (2), Spain (23), United States (10: Montana, New Mexico, Utah)
• Jurassic of United States (7: Colorado, Utah)
Total: 88 collections including 95 occurrences