FossilRecHandoutFall2010

FossilRecHandoutFall2010 - BioG1780 Evolution and...

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BioG1780 Fall 2010 Evolution and Biodiversity Today’s lecturer: Warren Allmon Lectures 12: Sept 22, 2010 1 Fossils: Life in rock This is the second of three lectures on the fossil record and what this record tells us about the history of life on earth. Today we consider the process of fossilization, the interpretation of the fossil record, and some examples of important fossils or fossil assemblages. And finally, we consider the unique role that the fossil record plays in the study of evolution. Readings for this lecture: Ch. 2 (Section on "Evidence from the Fossil Record"), pp. 44-49; Ch. 18 (Section 18.1), pp 689-694. I. Fossils as evidence of past life A. The fossil record is a remarkable sample of past life. B. The processes of fossilization introduce bias in the fossil record. 1. The fossil record is not a complete record of all past life. 2. Some organisms, and some parts of organisms, are more likely to be preserved than others. 3. Some past environments are more likely to be represented in the fossil record than others. II. Preservation of organisms
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This note was uploaded on 12/20/2011 for the course BIOG 1440 taught by Professor Owens during the Spring '10 term at Cornell.

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FossilRecHandoutFall2010 - BioG1780 Evolution and...

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