👉 Physorhinini are a group of small, round-shaped, sandstone-like fossils that were found in the Late Cretaceous period (from about 86 million years ago to about 72 million years ago) in North America. They are characterized by their distinctive rock formation and include a variety of sizes ranging from very small to large. Physorhinini fossils have been reported from various regions, including the United States and Canada, including Arizona, Nevada, Utah, Colorado, California