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Lecture January 20 - Lecture Visual predation-continuation...

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Lecture 01/20/2009 Visual predation -continuation of pre-adaptations acquired before becoming fully arboreal. Primates who eat fruit tend to have more complex brains K-selection-few offspring which requires more parental care and investment Complex social groups and life span posed an intellectual challenge to primates at this time 1. Living on the trees 2. Social groups: diversity and social dominance which implied sexual dimorphism When female is in estrus the male who befriends the female actually mates with the girl ahha Fossil evidence (primates) Purgatorius was found in Montana somewhere (he was a common-like ancestor of the primates) His species was Sarpolestes simpsoni and lived 60-63 million years ago His characteristics included: 1. Long tale 2. Limbs with claws, no nails 3. Eyes at the side of head 4. Long snout 5. No post orbital bar 6. Rodent like face 7. BUT MOST IMPORTANTLY GRASPING HANDS Teilhardina Asiatica was found in China 55 million years ago and had eyes in the front of the face.
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