Miocene Hominoids Understanding Physical Anthropology and Archaeology, 9th ed., p. 196.
The Age of Things: Sticks, Stones and the Universe Potassium, Argon, DNA and Walking Upright mmhedman/compton1.html.
The Age of Things: Sticks, Stones and the Universe Molecular Dating and the Many Kinds of Mammals mmhedman/compton1.html.
