ANT 2511 Lecture Notes - Lecture 9: Postorbital Bar, Adapis, Sister Group
13 Apr 2018
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Document Summary
Arboreal hypothesis: primates evolved as simply an adaptation to living in frees; to fill arboreal niche; focused on adaptations as a response to life in trees (old) Visual predation hypothesis focused on adaptions were useful for living in trees and hunting insects etc. Cartmill argued that primate adaptations due to them being arboreal hunters. Angiosperm radiation: by sussman; adds fruit to the mix. Missing features common to primates: postorbital bar (convergent eyes), lack opposability, claws, small brain, more rodent like teeth. New research: researchers saying likely candidates for primate ancestors. Capolestes: found in wyoming, used to be tropical forest; 58 mya. Primate features: grasping feet, nail on big toe. Proprimate features: claws on mist digits, nonconvergent eyes. Found in eocene (34-56 mya): began bc global warming; forests, trees in polar; Found in western europe, north america, africa, asia. Omomyids: large eyes (nocturnal), short snouts, resemble modern tarsiers.
