Rocks That Reveal The Past.
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By studying fossils found in layers of sedimentary rocks, scientists reconstruct the plant and animal life of the past. A demonstration to explain how sedimentary rocks are formed and examples of fossils found in certain layers of the Grand Canyon are shown.
Complete catalog record
Rocks That Reveal The Past. Film Associates Of California. 12 Min., Sd., Color, 16 Mm. Eastman Color. © Film Associates Of California; 14may62; Mp13778. , By studying fossils found in layers of sedimentary rocks, scientists reconstruct the plant and animal life of the past. A demonstration to explain how sedimentary rocks are formed and examples of fossils found in certain layers of the Grand Canyon are shown. NOTE: Two (or more) records have been merged together to create this data.
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