ANTH 203 Lecture Notes - Lecture 13: Wood Ash, Zhoukoudian, Pleistocene
25 Jan 2018
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Nov 4th homo ergaster and homo erectus continued. Longitudinal elongation of the skull (skull is a bit stretched out compared to. Decreased facial prognathism compared to earlier hominins. Reduction in molar/premolar size and thickness (reduces as species evolve) Cranial capacity between 850 and 1100 cc. Postcranial bones of all known specimens show modern homo sapiens body proportions. Body size significantly greater than that of h habilis/rudolfensis and generally similar to humans. (ave height between 4 and 9 feet) 2. 5 mya footprints discovered in 2009 at ileret, kenya (near koobi for a) are likely attributed to homo ergaster. Prints show distinctly modern human-like foot anatomy (a bit larger) but overall the same as us. Strong degree of sexual dimorphism (males about 25% larger than females) However there may be as much as 30% reduction in degree of sexual dimorphism between these species than earlier forms of hominins, p. e.
