The Clan of the Cave Bear is a historical novel by Jean M. Auel about prehistoric times set somewhat before the extinction of the Neanderthal race after 6.000.000 years as a species, and at least 10-15.000 years after Homo sapiens remains are documented and dated in Europe as a viable second human species. It is the first book in the Earth's Children book series which speculates on the possibilities of interactions between Neanderthal and modern Cro-Magnon humans.