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It has generally been thought that brain size increased along the human line especially rapidly at the transition between species, with H. habilis brain size smaller than that of H. ergaster / H. erectus, jumping from about 600–650 cc (37–40 cu in) in H. habilis to about 900–1,000 cc (55–61 cu in) in H. ergaster and H. erectus.
KNM ER 1813 is a skull of the species Homo habilis.It was discovered in Koobi Fora, Kenya by Kamoya Kimeu in 1973, and is estimated to be 1.9 million years old.. Its characteristics include an overall smaller size than other Homo habilis finds, but with a fully adult and typical H. habilis morphology.
John Russell Napier, MRCS, LRCP, D.Sc. (11 March 1917 – 29 August 1987) was a British primatologist, paleoanthropologist, and physician, who is notable for his work with Homo habilis and OH 7, [3] as well as on human and primate hands/feet.
Carl Linnaeus coined the name Homo sapiens. All modern humans are classified into the species Homo sapiens, coined by Carl Linnaeus in his 1735 work Systema Naturae. [9] The generic name Homo is a learned 18th-century derivation from Latin homÅ, which refers to humans of either sex. [10] [11] The word human can refer to all members of the Homo ...
The evolution of the fully opposable thumb is usually associated with Homo habilis, a forerunner of Homo sapiens. [42] This, however, is the suggested result of evolution from Homo erectus (around 1 mya ) via a series of intermediate anthropoid stages, and is therefore a much more complicated link.
The Red Deer Cave dwellers had distinctive features that differ from modern humans, including: flat face, broad nose, jutting jaw with no chin, large molars, prominent brows, thick skull bones, and moderate-size brain. [1] As with some other pre-modern humans, their body size was small, with an estimated mass of 50 kg (110 lb). [8]
To estimate the cerebellum, the australopithecines KNM-ER 23000 (Paranthropus boisei) and Sts 19 (A. africanus) with volumes of 40–50 cc, as well as KNM-ER 1813 (H. habilis), KNM-ER 1805 (H. habilis), and KNM-ER 1470 (H. rudolfensis) with volumes of 55–75 cc were used to estimate the volume of the MH1 cerebellum as about 50 cc. Considering ...
20–15 Subfamily: Homininae: Humans, chimpanzees, and gorillas (the African apes) [1] 14–12 Tribe: Hominini: Includes both Homo and Pan (chimpanzees), but not Gorilla. 10–8 Subtribe: Hominina: Genus Homo and close human relatives and ancestors after splitting from Pan—the hominins: 8–4 [2] (Genus) Ardipithecus s.l. 6-4 (Genus ...