Sivatherium resembled the modern okapi, but was far larger, and more heavily built, being about 2.2 meters (7 ft 4 in) tall at the shoulder, 3 m (10 ft) in total height with a weight up to 500 kg.[3] It had a wide, antler-like pair of ossicones on its head, and a second pair of ossicones above its eyes. Its shoulders were very powerful to support the neck muscles required to lift the heavy skull.