9-GeologicHistory&Extinction

9-GeologicHistory&am - Global spatial scales Marsupial distribution Uniformitarianism 1 Asteroids and mass extinction Army ant biogeography and

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1/30/2010 1 Global spatial scales Marsupial distribution Uniformitarianism
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1/30/2010 2 Asteroids and mass extinction Army ant biogeography and molecular clocks Dating with isotopes C decreases in half of its original concentration every 5,370 yrs Study system: Larrea tridentata Dominant; covers all warms deserts of North America
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1/30/2010 3 Larrea -the indicator species for deserts in paleoclimate studies Wegener and the theory that earth was composed of moving plates Plate tectonics and species distributions Magnetic anomalies • Sea floor spreading Divergent plate movement
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1/30/2010 4 Convergent plate movement and mountain building Plate tectonics Deep history of the breakup of Gondwana Continental movements influence distributions of terrestrial & marine species – predict faunal similarity?
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1/30/2010 5 Old World camels What about camels? South American camels (llamas and vicugna) North American camels ( Camelops spp.) Pleistocene overkill Pleistocene overkill
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1/30/2010 6 Trilobites- their
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This note was uploaded on 02/13/2010 for the course BIO 17017 taught by Professor Minckley during the Spring '10 term at Rochester.

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9-GeologicHistory&am - Global spatial scales Marsupial distribution Uniformitarianism 1 Asteroids and mass extinction Army ant biogeography and

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