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Peninj Mandible
Catalog no.Peninj 1
Common namePeninj Mandible
SpeciesAustralopithecus boisei
Age1.5 mya
Place discoveredPeninj, Tanzania
Date discovered1964
Discovered byKamoya Kimeu, Richard Leakey

[Editing this section and below

The Peninj Mandible (Peninj 1), also called Natron mandible,[1] is the fossilized lower jaw and teeth of an australopithecine specimen, likely that of Australopithecus boisei[2] or a similar popualtion[3]. It was discovered in West Lake Natron,[4] in the Arusha Region of Tanzania by Kamoya Kimeu, [5][6] Glynn Isaac, and Richard Leakey in 1964.

This mandible (jaw) is estimated to be 1.5 million years old[2] and it is characterized as having a robust build with large molars and reduced incisors.[7] The specimen is believed to be an adult male.

Discovery

Peninj 1 was found in 1964 at Peninj, a site in Tanzania west of Lake Natron and about 80 km (50 miles) from Olduvai Gorge, the major paleoanthropological site.[8]


Morphology and interpretations

Body text


References to add:

  1. Schaffer, W. M. (1968). Character displacement and the evolution of the Hominidae. The American Naturalist, 102(928), 559-571.
  2. Journal of Eastern African Research and Development. East African Literature Bureau. 1974. p. 129. The mandible was discovered by Kamoya Kimeu in 1964, during an expedition conducted by Richard Leakey and Glynn Isaac.
  3. Gray, R., R. Hentschke, S. Isaac, R. Mead, A. Ozturk, P. Rieley, K. Smale, and R. Stern. "Sampling variation of reported results." Nature 234, no. 5326 (1971): 230-231.
  4. de la Torre, I., Mora, R., & Martínez-Moreno, J. (2008). The early Acheulean in Peninj (Lake Natron, Tanzania). Journal of Anthropological Archaeology, 27(2), 244-264.

See also

References

  1. ^ "Peninj mandible | fossil". Encyclopedia Britannica. Retrieved 2020-05-14.
  2. ^ a b "Paranthropus boisei: Peninj 1". eFossils. Retrieved 21 December 2014.
  3. ^ Schaffer, William M. (1968-11-01). "Character Displacement and the Evolution of the Hominidae". The American Naturalist. 102 (928): 559–571. doi:10.1086/282568. ISSN 0003-0147.
  4. ^ Torre, Ignacio de la; Mora, Rafael; Martínez-Moreno, Jorge (2008-06-01). "The early Acheulean in Peninj (Lake Natron, Tanzania)". Journal of Anthropological Archaeology. 27 (2): 244–264. doi:10.1016/j.jaa.2007.12.001. ISSN 0278-4165.
  5. ^ Journal of Eastern African Research and Development. East African Literature Bureau. 1974. p. 129. The mandible was discovered by Kamoya Kimeu in 1964, during an expedition conducted by Richard Leakey and Glynn Isaac.
  6. ^ 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.
  7. ^ "Peninj mandible | fossil". Encyclopedia Britannica. Retrieved 2020-05-14.
  8. ^ "Peninj mandible | fossil". Encyclopedia Britannica. Retrieved 2020-05-14.


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