Field / Identification Guide
Out of Print
By: NL Larsen, SD Jorgensen, RA Farrer and PL Larson
148 pages, B|w photos, b/w illus, figs, tabs, maps
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About this book
Includes easily understood descriptions of over 90 species that lived for about 12 million years in the Pierre Seaway, which extended through the interior of North America connecting the Arctic Ocean with the Gulf of Mexico.
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Field / Identification Guide
Out of Print
By: NL Larsen, SD Jorgensen, RA Farrer and PL Larson
148 pages, B|w photos, b/w illus, figs, tabs, maps