4.03.06 L69 - April 3, 2006 Lecture 69: Evolution,...

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April 3, 2006Lecture 69: Evolution, Development, and DiversityFiguring out times on a phylogenetic treeradioactive datingrelative datingContinentsSplit up and regroup on a regular basisCalled a Wilson CycleScaleFirst fossils, 3.6byaAccumulating oxygen 2.9-2.2 bya2.2 bya – 1st eulkaryotes1.8 bya – ozone develops1.4 bya – Modern Eukaryotes550 mya – Cambrian Explosion (when most plants, animals, and fungi evolved.)KT Extinction (Asteroid)5PT ExtinctionAppearance of Multicellular fossilsPaleozoic, Mesozoic, Cenozoic

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Term
Summer
Professor
GILBERT,C.
Tags
Evolution, Darwin, Radioactive Dating, 5 pt, Multicellular fossils Paleozoic, relative dating Continents, PT Extinction Appearance

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