KNM ER 992

KNM ER 992
	KNM ER 992 replica
Catalog no.	KNM ER 992
Species	Homo ergaster
Age	1.5 mya
Place discovered	Koobi Fora, Kenya
Date discovered	1971
Discovered by	Richard Leakey
	Originally thought to be Homo habilis; reclassified as Homo ergaster in 1975

KNM ER 992 is a 1.5 million years old fossilized lower jaw discovered by Richard Leakey in 1971 at Lake Turkana, Kenya. The mandible was considered by C. Groves and V. Mazak to be the holotype specimen for Homo ergaster.^[1]^[2]^[3]

References

^ Groves, C. P.; Mazak, V. (1975). "An Approach to the Taxonomy of the Hominidae: Gracile Villafranchian Hominids of Africa". Casopis Pro Mineralogii a Geologii. 20: 225–247.
^ Tattersall (2015). "10 Homo ergaster and Its Contemporaries". In Henke, W.; Tattersall, I. (eds.). Handbook of Paleoanthropology. Berlin, Heidelberg. pp. 1634–1653.{{ cite book}}: CS1 maint: location missing publisher ( link)
^ Heslip, Steven (2001). "Homo ergaster". Michigan State University. (broken link)

Media related to KNM ER 992 at Wikimedia Commons
"Homo ergaster lower jaw cast". Australian Museum. 2001. Retrieved March 13, 2011.
"Images of KNM ER 992". The Smithsonian Institution. Archived from the original on July 11, 2006. Retrieved 2006-07-14.

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KNM ER 992 replica
Catalog no.	KNM ER 992
Species	Homo ergaster
Age	1.5 mya
Place discovered	Koobi Fora, Kenya
Date discovered	1971
Discovered by	Richard Leakey
Originally thought to be Homo habilis; reclassified as Homo ergaster in 1975