The only antelopine species found today in southern Africa is the springbok, Antidorcas marsupialis. However, a close relative, A. bondi, was abundant and widespread during the Late Pleistocene. This animal died out at the beginning of the Holocene, ca. 7000 years ago. In a recent study of Florisbad fossil mammals, it was proposed that the extinct springbok was an exclusive grazer on the basis of ... [Show full abstract] its specialized dental features, in contrast to the modern springbok, which is a mixed feeder. We provide evidence in support of this hypothesis from stable carbon isotopic analysis of fossil and modern sprinbok teeth. The results are also in accordance with the interpretation that A. bondi coexisted with a wide range of larger-bodied grazing ungulates in a system similar to the grazing succession described for the Serengeti in East Africa.