Palaeotragus primaevus is the older species, being found in early to mid-Miocene strata, while Palaeotragus germaini is found in Late Miocene strata. P. primaevus is distinguished from P. germaini by the lack of ossicones. It was also the smaller species, being a little under 2 m (6 ft 7 in) at the shoulders. P. germaini had a pair of ossicones, and in life, it would have resembled either a short-necked, 3 m (9.8 ft) tall giraffe, or a gargantuan okapi.