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Photograph of Dr. Paul Heaney Dunn, Head of the Department of Geology and Geography at Mississippi State from 1934-1962

Mr. Franklin Carl Seiler was Instructor of Geology, Department of Geology and Geography from 1937-1944.

Approximate placement of shorelines from the Cretaceous through the Pleistocene, showing the Mississippi Embayment.

This chart shows the way geologic time is broken down into smaller spans of time called Eons, Eras, Periods, and Epochs. The top of the chart is current time, labeled as 0 Ma (0 years before present). The bottom of the chart represents the beginning…

This map shows which parts of North America were inundated with water during the Cretaceous Period.

Exogyra costata are commonly found in the Cretaceous strata in northeast Mississippi. This example from the Dunn-Seiler Museum shows damage to the growth lines that were repaired as the creature grew.

Thumbnail of Fossilization Video

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