Udanoceratops was a Protoceratopsian from late Cretaceous Asia. It was 16 feet long, based on a very large 2 foot long skull. That makes it the largest of the Protoceratopsian, which have no horns at all. Udanpceratops was no exception. It did, however, have a short neck frill very much unlike its Protoceratopsian relatives. It could have stood up on its back legs, but being 1500 lbs, it probably would have stayed quadrupedal to avoid too much stress on its hips.