Type Geological formation Sub-units Bluffport Marl Member Primary Chalk Underlies Ripley Formation | Unit of Selma Group Country United States Named for Demopolis | |
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Overlies Mooreville Chalk Formation Regions Alabama, Mississippi, Tennessee | ||
The Demopolis Chalk is a geological formation in North America, within the U.S. states of Alabama, Mississippi, and Tennessee. The chalk was formed by pelagic sediments deposited along the eastern edge of the Mississippi embayment during the middle Campanian stage of the Late Cretaceous. It is a unit of the Selma Group and consists of the upper Bluffport Marl Member and a lower unnamed member. Dinosaur and mosasaur remains are among the fossils that have been recovered from the Demopolis Chalk.
Dinosaurs
Indeterminate hadrosaurid remains have been found in Tennessee. Possible indeterminate tyrannosaurid remains have been found in Alabama.
References
Demopolis Chalk Formation Wikipedia(Text) CC BY-SA