Synthetoceras tricornatus is a large, extinct protoceratid, endemic to North America during the Late Miocene, 10.3—5.3 Ma, existing for approximately 5 million years. Fossils have been recovered from Nebraska and Texas.[1]
Synthetoceras
Small Mammals
for Small Mammals in Ice Age
Suggested by manassestobias
it By 20th Century Fox Blue Sky Studios
