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Pages File Edit Insert Format Arrange View Share Window Help ?98%-. Tue 11:07 PM a E ANT 120 Lab 6-Edited in Presentation ? Share ^ Fill The carlicst morphological fcatures of bipedalism to occur in the hominin fossil record are the changes in the innominate or os goxa. These features include a shorter and wider ilium that is angled forward, thereby creating the sciatic notch. Examine the 3D models and use them to complete the chart below ? Secure l Outline Google All Shape of the Ilium (Short and wide or Long and broad) Sciatic Notch (Present or Absent) Presence of a pronounced AlIS chimp gorilla long and broad Chimpanzee Human sull Australopithecus Nothing selected. Select an object or text to format. Part 2.The Innaminate Os Couo Modern human 483 words Slide 4 of 5 English( 106% ESExplanation / Answer
Shape of Ilium:
Chimpanzees - long and broad (given), oriented perpendicular to the lower limb axis (more reflective of their characteristic knuckle-walking.
Australopithecus - short, curved forming a bowl-shape.
Modern human - short, curved from side-to-side forming a basin-shape, oriented in line with the lower limb axis, which is more reflective of bipedalism.
AIIS (Anterior Inferior Iliac Spine??) :
Chimpanzees - Lacking.
Australopithecus - Sigmoid-shaped.
Modern humans - Robust and antero-medial orientation.
Sciatic notch:
Chimpanzees - Lacking.
Australopithecus - Present.
Modern humans - Present.
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