Oryx Skull Cap - Horns are around 34 inchesGenuine Gemsbok Skull V shape. The gemsbok, gemsbok or South African oryx (Oryx gazella) is a large antelope in the genus Oryx. It is native to the arid regions of Southern Africa, such as the Kalahari Desert. Some authorities formerly included the East African oryx as a subspecies. For size comparison please look at the photo of the red hartebeest skull next to oryx, blesbok and wildebeest. That is a good way to visualize the size difference between