page_title: Demopolis Chalk
section_title: Mosasaurs
hierarchical_section_title: Demopolis Chalk / Vertebrate paleofauna / Reptiles / Mosasaurs
caption_attribution_description: Plioplatecarpus, autor - Bogdanov,2006
context_page_description: 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.
caption: Plioplatecarpus
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