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Curated OER
The Rock and Fossil Record
Go deep in your paleontology unit with this spectacular set of slides! It introduces viewers to the types of fossils, a few famous fossils, and the geologic eras. This is done with easy-to-read text, diagrams, photos, and even videos.
Biology Junction
Plant Diversity
Ginkgo trees existed for more than 350 million years, and, at this time, only one species still remains. While plant diversity generally increases over geologic time, some interesting exceptions occur. Young scientists learn about plant...
Other
Western Oregon University: Earth System Science: Geologic Time [Pdf]
An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...