Primates - Anthropology 116

Primates - Anthropology 116 - Anthropology 116 Primates...

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Anthropology 116 – Primates Insect Predator o Cartmill o Orbital convergence – ability to visualize stereoscopically o Nails/grasping Frugavore – terminal branch feeding o Color vision allowed the discrimination of ripe fruit Good seed dispersers Tell the difference between ripe and unripe (green and red) o Grasping allowed for exploitation of fruits unavailable to other mammals o Many primates are folivores Grasping leaping locomotion o Effective locomotion in an arboreal environment Able to move along thin branches and avoid predators Angiosperm/Insectivory o Evolution of certain plants emerged with the emergence of primates Angiosperms – fruiting and flowering plants o Grasping evolved to exploit these angiosperms Purgatorius and Plesiadapids o 65 – 55 mya in the Paleocene o Emergence of squirrel like creatures o Post-cranial looks primate like o Adapted for arboreal life o Nocturnal and quadrapedal o Developed olfactory system o Teeth suggest seed eating and insectivory o Non primate features Claws instead of nails No post orbital bar Omomyidae (Eocene Primates) o See slides o Not a lot of sexual dimorphism Adapids (Eocene Primates) o Like modern lemurs o See slides o Not as specialized as Omomyidae Oligocene Anthropoids o Fayum depression (36 – 33 mya) Really fruitful site for fossils o Diet seems more generalized (less specialized) o See slides o Large sexual dimorphism
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o Very unique New World Anthropoids o Don’t know much about the origins of these primates Covered by the Amazon Fossil preservation is poor Different dentition Either came from North American primates No fossils exist that suggest this o Earliest fossils may underestimate the age of the species Or came from African primates Rafted 2000 mi from Africa o Difficult but not impossible o At the same time see African like rodents in South
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This note was uploaded on 02/25/2012 for the course ANTH 1312 taught by Professor Agwuele during the Fall '08 term at Texas State.

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Primates - Anthropology 116 - Anthropology 116 Primates...

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