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This partial cranium, designated as the species’ holotype, is actually a set of fragments consisting of the front and side portions of the skull, the upper jaw, and upper teeth. The lower face is prognathic and the back teeth are very large with thick enamel. The estimated cranial capacity from the reconstructed cranium is 450 cubic centimeters, similar to other australopithecines.
Site:Bouri, Middle Awash, Ethiopia
Date of discovery:1999
Discovered by:A team led by Berhane Asfaw
Age:About 2.5 million years old
This is the only known skull of this species. It has a curious mixture of <italic>Homo-</italic> like cranial features, an <italic>Australopithecus-</italic> like brain size, and large <italic>Paranthropus-</italic> sized teeth.