Hyopsodontids
Hyopsodontids were a family of extinct mammals that lived during the Paleocene and Eocene epochs. These small, herbivorous or omnivorous creatures are often grouped with ungulates, or hoofed mammals, though their exact evolutionary relationships are debated. Fossils of hyopsodontids have been found primarily in North America and Europe. They are characterized by their relatively simple, bunodont (rounded cusp) teeth, suggesting a diet of soft vegetation or insects. Their skeletal structure indicates they were likely terrestrial animals, possibly adapted for digging or browsing. Some genera, like Hyopsodus, are well-known examples from this family. Hyopsodontids represent a diverse group within the early mammalian radiation following the extinction of the dinosaurs, offering insights into the ecological niches occupied by mammals in the early Cenozoic. Their evolutionary trajectory and eventual extinction remain subjects of ongoing paleontological research.