During the mid Cretaceous, around 100-80 million years ago, the leptoceratopsids split off from the main ceratopsian lineage. Fairly small with low frills, they were a successful group lasting throughout the rest of the Mesozoic. Seeming to originate in western North America, a few species have been found in Asia that may represent a dispersal event back across Beringia, and partial remains are also known from Europe and Appalachia. There’s even a dubious identification from Australia.
Leptoceratops (“small horned face”) was one of the last of this branch of the ceratopsians, living during the very end of the Cretaceous (~66 mya). About 2m long (6′6″), its fossils have been found in Alberta, Canada, and Wyoming, USA, and it would have lived alongside some of its larger distant cousins like the much more famous Triceratops.
Its skeleton shows it was a stocky quadrupedal sort of pig-like animal. Short deep jaws with strong teeth gave it a powerful bite, adapted for slicing and crushing, and it was probably specialized for a diet of very tough plant matter.