Evolution
The four-horned antelope is currently regarded as the only species in the genus Tetracerus. Both genetic and morphological studies, however, confirm it as one of only two living members of the tribe Boselaphini, with its closest living relative being the nilgai. This group originated at least 8.9 million years ago, in much the same area where the four-horned antelope lives today, and may represent the most "primitive" of all living bovids, having changed the least since the origins of the family.
Read more about this topic: Four-horned Antelope
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