Historical Geology Timelines

Historical Geology Timelines
Four 11x14 format timelines for Precambrian, Paleozoic, Mesozoic and Cenozoic Eras.

File 31553 is a 453kB Acrobat (PDF)
Uploaded: Feb8 12
Last Modified: 2012-02-08 12:43:32
http://d32ogoqmya1dw8.cloudfront.net/files/NAGTWorkshops/time/visualizations_teachtips/historical_geology_timelines.pdf

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Provenance
Hand/computer created by Gwenn Ziegler, GCC Lab Tech. She has approved distribution and a list of original sources is included with the files.
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