Geology Along the Lewis & Clark Trail

Carnegie Museum Invertebrate Paleontology Collection Sites

Swimming the Seas During the Age of Dinosaurs

While dinosaurs roamed the lands, abundant mollusks and crustaceans inhabited the shallow seas of the central United States. The rocks around the Fort Peck Reservoir exhibit abundant evidence of this life. (Lewis and Clark, 5/10/1805)

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Mesozoic

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