mammal genus - a genus of mammals

family Hominidae, Hominidae - modern man and extinct immediate ancestors of man

australopithecine - any of several extinct humanlike small-brained bipedal primates of the genus Australopithecus; from 1 to 4 million years ago

Australopithecus afarensis - fossils found in Ethiopia; from 3.5 to 4 million years ago

Lucy - incomplete skeleton of female found in eastern Ethiopia in 1974

Australopithecus africanus - gracile hominid of southern Africa; from about 3 million years ago

Australopithecus boisei - large-toothed hominid of eastern Africa; from 1 to 2 million years ago

Australopithecus robustus - large-toothed hominid of southern Africa; from 1.5 to 2 million years ago; formerly Paranthropus