The team collected data from 380 lower jaw specimens, spanning 18 species of large herbivorous mammals in China, covering the time before (1880s–1910s) and after (1970s–1990s) the human ...

During the Cretaceous period 125 million years ago, a ravenous Repenomamus, an ancient mammal the size of an opossum, pounced on an unsuspecting Psittacosaurus—an herbivorous dinosaur more than ...

Repenomamus robustus is a badger-like animal that was among the largest mammals living during the Cretaceous period. The dinosaur was identified as a Psittacosaurus, an herbivore about the size of ...