BOVIDAE (MAMMALIA) FROM THE LOWER PLIOCENE OF CHAD.

The article describes the Bovidae (Mammalia) species from the lower Pliocene in Kossom Bougoudi (KB) and Kollé (KL) in Chad. Most of the specimens analyzed are consist of isolate teeth, incomplete horn-cores and limb bones and evidence of wind abrasion. The holotype, paratype, derivato nominis and diagnosis of each Bovidae species are discussed, including Tchadotragus fanonei, Kobus, Aepyceros, Jamous kolleensis and Gazella. According to the authors, the assemblages in KB and KL document the gradual replacement of hippotragines by alcelaphines. A comparison between the KB and KL Bovidae with those from Sahabi, Libya is also presented.