Fossil primates chapter 9

Fossil primates chapter 9 - FOSSIL PRIMATES Chapter 9...

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FOSSIL PRIMATES Chapter 9 continued…
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The Mesozoic Era (225- 65mya) • “Age of the Reptiles” – Dinosaurs rule the earth • Mammalian evolution  begins – Small, insect-eating – Similar to monotremes – Jurassic – first marsupial and  placental mammals – Diversification in late  Cretaceous • Angiosperms and insects
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K-T Boundary • Drastic change in environment – Probably caused by asteroid or  comet – Crater of Chicxulub in the Yucatan  Peninsula, Mexico – Firestorm, tidal waves, and a drastic  global cooling – Killed plant life, than herbivore  dinos, and than carnivore dinos • Direct or indirect cause of the  extinction of dinosaurs – Provided opportunities for  mammalian radiation
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Cenozoic “Age of Mammals” • Mesozoic • 225-65mya
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The Cenozoic Era (65mya- present) • Paleocene 65-54.8mya • Eocene 54.8-33.7mya • Oligocene 33.7-23.8mya • Miocene 23.8-5.3mya • Pliocene 5.3-1.8mya • Pleistocene 1.8-0.01mya • Holocene 0.01mya - present
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Paleocene 65-54 mya
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This note was uploaded on 03/27/2008 for the course ANTHRO 307 taught by Professor Guestlecturer during the Spring '08 term at Iowa State.

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Fossil primates chapter 9 - FOSSIL PRIMATES Chapter 9...

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