ANTH-101 Lecture Notes - Lecture 99: Sahelanthropus, Becoming Human, Afar Region
Document Summary
Becoming human (nova, 2011) episode 1, becoming human, first steps . Homo sapiens is the first hominid species ever to be alone (without other homos) When the video discusses the infant skull found (selam) in the afar region of ethiopia (and the. But selam is special because was found nearly complete (at least this ancient, never been found intact before: describe the species. Based on their hip bone orientation and the shape of the pelvis resembles human more than ape (who is not bipedal) Energy use as efficient is crucial to survival. Bipedalism is advantageous when one needs to walk long distances (ie the increasing distance between food sources with the loss of forest encourages bipedal developments). 5-7 million years ago for last common ancestor. Molecular clock: how long ago did we split from common ancestor (rate of change of dna sequence constant over time)
