Psammosphaera laevigata White, 1928Class: Astrorhizata Subclass: Astrorhizana Order: Astrorhizida Family: PsammosphaeridaeOccurrence in unknown Mexico Mexico and Middle America North America Age: Cretaceous Upper Cretaceous View of Psammosphaera laevigata White, 1928 holotype REPOSITORY: American Museum of Natural History, NY Microfossil Type Catalog Number: AMNH-FI-19874 Courtesy of AMNH, Invertebrate Paleontology, New York REFERENCE: White, M. P., 1928. |