Before revision: Homo () is a genus of great ape that emerged from the genus Australopithecus and encompasses the extant species Homo sapiens (modern humans) and a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans .
After revision: Homo is a genus of great ape that emerged from the genus Australopithecus and encompasses the extant species and a number of extinct species .