<P> Within the taxon Hominidae , a number of extant and known extinct , that is , fossil , genera are grouped with the humans , chimpanzees , and gorillas in the subfamily Homininae ; others with orangutans in the subfamily Ponginae ( see classification graphic below ) . The most recent common ancestor of all Hominidae lived roughly 14 million years ago , when the ancestors of the orangutans speciated from the ancestral line of the other three genera . Those ancestors of the family Hominidae had already speciated from the family Hylobatidae ( the gibbons ) , perhaps 15 million to 20 million years ago . </P>
when are hominids now thought to have differentiated from the ancestors shared with the african apes
roughly 14 million years ago