ARCH 112 Lecture Notes - Lecture 7: Orrorin, Sahelanthropus, Canine Tooth
10 Sep 2018
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Explanations for bipedalism (continued) helped them to walk the greater distances that was presented before them now (discussed in feder, chapter 3) The body was meant to run (muscles, gluteal, articular surfaces of the leg are much larger in hominids (area where femur and tibia meet)). This surface allows for the impact as they run to be less. Sites include in africa for the early hominins including the great rift valley. Know names, time period, where they come from, key features of the upright walkers** Know it walked upright even though only found its skull. Thickness of the tooth enamel we see they have thick enamel like humans. Has a smaller canine tooth like human"s b/c apes have a larger canine tooth. Supra orbital torus (the ridge above the eye) found in early hominids. Fossil was discovered in chad in north central africa. See adaptations that show it"s an upright walker (see long femoral neck which is a humanin characteristic)
