KNM ER 3883

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KNM ER 3883
Fossil KNM-ER 3883.JPG
Catalog no.KNM ER 3883
SpeciesHomo erectus
Age1.6 million years
Place discoveredKoobi Fora, east of Lake Turkana (formerly lake Rudolf), Kenya
Date discovered1976
Discovered byRichard Leakey

KNM ER 3883 is the catalogue number of a fossilized skull (nearly complete cranium) of the species Homo erectus. The fossil was discovered by Richard Leakey in 1976 in Koobi Fora, east of Lake Turkana (formerly lake Rudolf), Kenya.[1]


Most of the facial skeleton of the fossil is missing. Only the Neurocranium is in a fairly complete state. Researchers have calculated that the fossil is about 1.6 million years old and likely represents a male.[2] KNM ER 3883 is a more robust and a little larger than KNM ER 3733.[3] The cranium is long and low and it has postorbital construction. It has a large face and zygomatic bone.[1] Shows a cranial capacity greater than any previous hominid capacity which is estimated at 804 ml.[4]


  1. ^ a b "Homo ergaster: KNM-ER 3883". eFossils (website). Retrieved 14 October 2012.
  2. ^ "KNM-ER 3883". Retrieved 14 October 2012.
  3. ^ Walter Carl Hartwig (11 April 2002). The Primate Fossil Record. Cambridge University Press. pp. 423–424. ISBN 978-0-521-66315-1. Retrieved 14 October 2012.
  4. ^ "KNM-ER 3883". Retrieved 14 October 2012.