Week_9_Discussion_Outline

Week_9_Discussion_Outline - Week 9 Key Words Reading: Ch 8...

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Week 9 Key Words Reading: Ch 8 & 9 Keywords: Adaptive Radiation Pangaea Gondwana/Laurasia Paleocene/Eocene Purgatorius Adapids Notharctus Adapis Omomyids Necrolemur Tetonius Integrated Molars Mosaic evolution Cingula Proconsul Fayum Apidium Aegyptopithecus Dendropithecus Styloid process Sivapithecus Gigantopithecus I. Geologic Timescale: Precambrian Eon 4.5 billion to 543 million years ago (mya) bacteria Phanerozoic Eon 543 mya to present divided into three eras o Paleozoic Era 543 – 248 mya invertebraes, fish land plants, early reptiles o Mesozoic Era 248 to 65 mya “age of Reptiles”; Dinosaurs o Cenozoic Era 65 mya to present “age of mammals”
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II. Continental Drift: impact on primate evolution supercontinent (Pangaea) broke into northern Laurasia and southern (Gondwana) land masses during Mesozoic separation of North America and Europe during Eocene; primates began to differentiate North American primate forms did not migrate to South America (extinction) New World Monkeys rafted over from Africa III. Cenozoic Era, the “Age of Mammals”: Tertiary Period (65 – 1.8 mya ):
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IV. Primate Evolution during the Paleocene (65 – 55 mya): Madagascar split from Africa Adaptive radiation of placental mammals Earliest candidates for Primate Order Purgatorius:
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Week_9_Discussion_Outline - Week 9 Key Words Reading: Ch 8...

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