page_title: Mooreville Chalk
section_title: Mosasaurs
hierarchical_section_title: Mooreville Chalk / Reptiles / Mosasaurs
caption_attribution_description: Clidastes prophyton
context_page_description: The Mooreville Chalk is a geological formation in North America, within the U.S. states of Alabama and Mississippi, which were part of the subcontinent of Appalachia. The strata date back to the early Santonian to the early Campanian stage of the Late Cretaceous. The chalk was formed by pelagic sediments deposited along the eastern edge of the Mississippi embayment. It is a unit of the Selma Group and consists of the upper Arcola Limestone Member and an unnamed lower member. Dinosaur, mosasaur, and primitive bird remains are among the fossils that have been recovered from the Mooreville Chalk Formation.
caption: Clidastes prophyton
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