Ardipithecus is a biological genus of fossil hominoids known from the Late Miocene and Early Pliocene of Ethiopia. The genus includes two species, Ardipithecus ramidus and Ardipithecus kadabba, which extend across a time range from 4.3 million to 5.8 million years ago. Ardipithecus ramidus is well documented across much of its anatomy, in part due to the “Ardi” ARA-VP-6/500 partial skeleton from Aramis, Ethiopia. The known anatomical features of Ardipithecus include a number of derived similarities shared with hominin genera such as Australopithecus and Homo, and suggest that Ardipithecus may itself belong to the hominin tribe. The paleoecology of Ardipithecus has been a subject of intense interest because of its relevance to the early evolution of bipedal locomotion, but the present evidence does not clearly distinguish the environmental context of this hominoid or its phylogenetic relationship with the hominins.