indricotherium

plural

indricotheria 

1. A very large, extinct land mammal of the genus Indricotherium (formerly Baluchitherium) of the Oligocene and Miocene Epochs. It stood 5.5 m (18 ft) high at the shoulder and weighed four times as much as an elephant. It was related to the rhinoceros but had a long neck, long legs, and no horns. The indricotherium is the largest land mammal known to have existed.

Example Sentences

About 34 million years ago, during the early Oligocene epoch, the largest known land mammal ever, a rhinoceroslike creature known as Indricotherium transouralicum, lived in Eurasia.

From New York Times