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lab7 - Exercise 11.1 The Human Skeleton 1 Compare the lower...

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Exercise 11.1 The Human Skeleton 1. Compare the lower dentition of homo habilis with that of Australopithecus. How are they different? The lower dentition of homo habilis is different from the lower dentition of the Australopithecus because the homo habilis has a much smaller mandible. 2. Compare the H. habilis cranium with that of A. africanus and a robust species. The robust species and A. africanus both have a much more noticeable pertrusion because there mouths and faces stick out more. They all have a very noticeable brow ridge. 3. Compare the proximal femur of the 1.6 m.y.a. H. erectus specimen with those of Australopithecus and modern H. sapiens. The proximal femur of the H. erectus and modern H. sapiens is much larger than the femur of the Australopithecus. This may suggest that the H. erectus and modern H. sapiens were better suited for bipedal walking. 4. Do you notice any other differences in the H. erectus specimen in Figure 11.27 from those of modern humans? Yes, the H. erectus specimen is much shorter than that of an adult modern human. The Skull of the H. erectus appears larger and wider and the space where the nose would be is much larger.
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