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US cretaceous general-1-

The contiguous United States during the Cretaceous.

The Cretaceous is a geologic period and system, reaching from the end of the Jurassic Period, (145.5 ± 4 million years ago (Ma) to the beginning of the Paleocene Period, 65.5 ± 0.3 Ma. It is the youngest geological period of the Mesozoic, and at 80 million years long, the longest period of the Phanerozoic. The end of the Cretaceous defines the boundary between the Mesozoic and Cenozoic eras.

Cretaceous in "The Green Buffalo"Edit

Joe and his friends were briefly transported from 1890 to the Cretaceous without realizing it. Before they were returned to their own time, they encountered a Torosaurus which they thought was a diseased buffalo.

Cretaceous in "Hatching Season"Edit

Paula Shaffer traveled back to the Cretaceous on a grant to do a field-study of hadrosaurs.

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