The Peninj Mandible (Peninj 1) is the lower jaw and teeth of a male Australopithecus boisei. It was discovered in Peninj, Tanzania by Kamoya Kimeu, part of Richard Leakey's team, in 1964. It is estimated to be 1.5 million years old. Its characteristics are a heavy build with large molars and small incisors.
For more information, click here. Or, Try these sources:
- "Paranthropus boisei: Peninj 1". eFossils. Can be read here.
- Journal of Eastern African Research and Development. East African Literature Bureau. 1974. p. 129. Can be viewed here.
- Virginia Morell (11 January 2011). Ancestral Passions: The Leakey Family and the Quest for Humankind's Beginnings. Simon and Schuster. p. 303. ISBN 978-1-4391-4387-2. Can be read here.