BIO 1300 Lecture Notes - Lecture 4: Prognathism, Sagittal Crest, Foramen Magnum
11 Feb 2017
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Document Summary
Many human like species who may not have been directly related to us. Many traits that allowed it to be within the homo lineage. Walked in a bipedal fashion, indicated by its magnum foramen. Animals which walk on their hands/palms have a foramen magnum at that back of their skull rather than the bottom such as seen in humans. Chimp has 400cc brain, human brain is 1300cc. A lot of evidence suggesting they were bipedal mostly from their femur. Also had indications that it was still transitioning between the two forms of movement (long fingers). Diet would have been based off fruits and seeds like early humans and chimps of today. Flat feet but still had disposable toes for grasping. Long arms strong hands allowed them to be arboreal if they needed to. Sexual dismorphism implies males and females have different roles in their survival. Most popular of the genus is the afarnsis (cid:498)lucy(cid:499) is a member of the species.
