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<p>Book digitized by Google and uploaded to the Internet Archive by user tpb.
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<br>Subjects: cretaceous; jurassic; fort; strata; geology; fossils; permian; rocks; pyramid; nebraska; public domain; pyramid mount; jurassic rocks; google book; black hills; big sioux; red river; lower miocene; gryphcea dilatata; book search</div>
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Jules Marcou</div>
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