112-pp13 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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1 GY 112: Earth History Fossil Preservation UNIVERSITY OF SOUTH ALABAMA Last time we covered… 1) Linne (the Linnaean System) 2) Taxonomy ordering 3) Some examples (important beasties you will see in GY 112) Taxonomy Recap Today’s Agenda 1) The fossil record 2) Types of fossil preservation 3) Trace fossils Lecture 13: Fossil Preservation (Web Lecture 13) The Fossil Record Source: Heck's Iconographic Encyclopedia (1851)
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2 Fact: Only a (small?) proportion of all of the beasties that ever lived (or will live) on the Earth will ever be preserved in the rock record. The Fossil Record Fact: Only a (small?) proportion of all of the beasties that ever lived (or will live) on the Earth will ever be preserved in the rock record. What Proportion? The Fossil Record Fact: Only a (small?) proportion of all of the beasties that ever lived (or will live) on the Earth will ever be preserved in the rock record. What Proportion? Probably less than 5% The Fossil Record Fossil Preservation How does something get fossilized? Fossil Preservation How does something get fossilized? •Possess hard body parts Fossil Preservation How does something get fossilized? •Possess hard body parts •Die “peacefully”
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3 Fossil Preservation How does something get fossilized? •Possess hard body parts •Die “peacefully” •Get buried quickly Fossil Preservation How does something get fossilized? •Possess hard body parts •Die “peacefully” •Get buried quickly •Stay buried Fossil Preservation How does something get fossilized? •Possess hard body parts •Die “peacefully” •Get buried quickly •Stay buried •Avoid oxygen (anaerobic environment) Fossil Preservation How does something get fossilized?
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112-pp13 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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