The Hominidae (pronounced /hɒˈmɪnɨdiː/; anglicized hominids, also known as great apes), as the term is used here, form a taxonomic family, including four extant genera: chimpanzees (Pan), gorillas (Gorilla), humans (Homo), and orangutans (Pongo).
It is also common to use the term in a more restricted sense of humans and relatives of humans closer than chimpanzees. In this usage, all species other than Homo sapiens are extinct.
A number of known extinct genera are grouped with humans in the Homininae subfamily, others with orangutans in the Ponginae subfamily. The most recent common ancestor of the Hominidae lived roughly 14 million years ago, when the ancestors of the orangutans speciated from the ancestors of the other three genera. The ancestors of the Hominidae family had already speciated from those of the Hylobatidae family, perhaps 15-20 million years ago.