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| This picture shows how the pelvis of a chimp (Pan) is long and narrow, and does not have a sciotic notch. |
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| This picture shows how the sciotic notch on a human pelvis forces the pelvis to be short. This is not the case with Pan. |
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| Ardipithecus ramidus. This picture of the pelvic bone of Ardi shows that a sciotic notch is present. |
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| Sahelanthropus tchadensis. This picture shows that the supraorbital bar is straight and that there is no sulcus. |
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