Early Hominins

Early Hominins - Early Hominins 26/02/2008 12:33:00...

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Early Hominins 26/02/2008 12:33:00 Hominines: only those species having to do with those who are our direct descendent (5.5-1.5 million yrs. ago) Sexual dimorphism- less variation of sexually dimorphic over time Human characteristics (compared to other primates) Bipedalism (savanna hypothesis) Brains, skulls, and greater childhood dependency Change in dentition (teeth) and palate shape (more parabolic over time) Rise in tool use and importance Anatomy of bipedalism Foramen magnum (spinal cord connects to brain) located in the center for bipeds to give center of gravity Located further back in quadrupeds Pelvis shape and angle of femur: Angle of femur on chimp: on inner knee and for humans on out part of knee (remain closer together) allow for efficiency Which came first, large brain or bipedalism? Savanna hypothesis-opinion that we hominines, evolve in a grassland savanna type environment (Ethiopia, Kenya, Tanzania)
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This note was uploaded on 03/22/2009 for the course ANTH 1102 taught by Professor Gonzalez during the Spring '08 term at UGA.

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Early Hominins - Early Hominins 26/02/2008 12:33:00...

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