ANP201 Geology - Fossil Record o Reveals events that we would never know about E.g North American primates o Intermediate forms(missing links shows us

ANP201 Geology - Fossil Record o Reveals events that we...

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Fossil Record o Reveals events that we would never know about E.g., North American primates o Intermediate forms (“missing links”) shows us how modern groups got the way they are Ex: Lucy, Chimps o Provides temporal framework for evolution Geological time is vast, we experience only an instant of Earth History If the age of earth(4.6 billion years) were condensed into one year o Jan 1 – Earth born o Early Feb – oldest known rocks formed o Late mar – first primitive life formed o Mid nov – first complex life with shells or skeletons formed o Late nov – first land animals o Dec 25 – Extinction of the dinosaurs (earliest primates) o Dec 31 – Humans evolved in the evening Fossil Record of life o First dinosaurs – Triassic Period of Mesozoic era o First primates – tertiary period of Cenozoic era What is the “fossil record” o Rocks Igneous Melting of rocks in hot, deep crust and upper mantle Crystallization (solidification of magma) Sedimentary Weathering and erosion of rocks exposed at surface Deposition, burial and lithification Metamorphic rocks

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