Homo habilis had gracile features compared to australopiths, while robust australopithecines had large teeth for tough diets.
Homo habilis exhibited a high degree of sexual dimorphism and had more gracile characteristics compared to australopiths. Their dentition was more human-like, with smaller teeth and dental arcade. On the other hand, robust australopithecines, like Paranthropus boisei, had large premolars suited for chewing tough plant material.
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