Difference between zinjanthropus and homohabilis​

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The differences between homohabilis and Australopithecus are: homohabilis possesses a greater cranial capacity (610 to about 800cc), it has reduced prognathism is a flatter face and a shorter tooth row. The giant increase in brain size made by habilis would have given the species the advantage of stone tool-making.

c) troops march forward in close formation against newer, more accurate weapons