BIOLOGY 1B Lecture 16: Lecture-16-7_19_18
Document Summary
Just so story elephant trunk long because it got pulled on by crocodiles. Looked in africa for ancestor that tied chimps to humans. Dart was an australian anatomist that discovered specimen for australopithecines. Australopithecus = southern ape from south africa. From chad, 7 to 6 million years ago. Foramen magnum position is more of a right angle in humans, in pan troglodytes and australopithecus africanus, it"s acute, and for sahelanthropus tchadensis is upright. Curved hand bones arms go below knees. Compared to bonobos lamarck"s hypothesis for how apes evolved great apes evolved to stand by standing up in great safari to get a view. Suggests that it was a major climber competent in tree-tops good locomotion. Occupies dense woodlands, separated by grassy areas, and bodies of water. Huge, massive teeth looks like they"re filled with air round. This suggests that they may have had a unique diet. All these creatures had relatively big brain size.
