uw3355 - coryphodon eocaenus lower jaw download free 3d model university wyoming libraries uwlibraries 531a488 period epoch cenozoic eocene rock formation wind river fm state county wy albany taxonomy mammalia&gt cimolesta&gt coryphodontidae&gt part earliest group large herbivorous plant eating mammals animal stood 1 m 33 ft tall shoulders weighed around 500kg 1100 lb resembled small hippopotamus tusks were likely used rooting up plants but could have also been display males larger scanned david sls-2