Indricotherium
The huge Indricotheres “Indrik beast” of the Oligocene were the largest land mammals ever to have lived standing 4.5 meters at the shoulder and weighing 15 tons. They were just larger than the Colombian mammoth, and the largest of the Deinotheres. Although they are members of the  running rhino family, they became adapted to browsing the tops of trees like modern giraffes. Their whole body was stretched upwards to do this, with very long legs and a long neck. They roamed across most of Eurasia, the largest being found in Mongolia   The fossils show that males were slightly bigger than females, with slightly more domed and reinforced skulls, suggesting that the males fought rather like modern giraffes.
00 years ago).