Mooreville Chalk

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.

[1] The chalk was formed by pelagic sediments deposited along the eastern edge of the Mississippi embayment.

[2] Dinosaur, mosasaur, and primitive bird remains are among the fossils that have been recovered from the Mooreville Chalk Formation.

[4] A trachichthyiform Ichthyodectes I. ctenodon[4] An ichthyodectiform Moorevillia M. hardi[4] A tselfatiiform Pachyrhizodus P. caninus[4] A crossognathiform Protosphyraena P. gladius[3] A pachycormid Saurodon S. leanus[4] An ichthyodectiform Stratodus S. apicalis[4] An aulopiform Xiphactinus X. audax[4] An ichthyodectiform Indeterminate hadrosaurid, nodosaurid, dinosaur egg, and ornithomimosaur fossils are known from Mooreville Chalk outcrops in Alabama.

Lophorhothon[1][3] L. atopus[1][3] A primitive species of hadrosaurid known from only a few skull fragments.

[1] Clidastes C. liodontus[4] Mosasaurines C. "moorevillensis"[3] C. propython[4][3] Eonatator E. sternbergi (sic)[3][9] A halisaurine E. sternbergii was formerly classified as Halisaurus sternbergii[10] E. zangerli[11] Globidens G. alabamaensis[3] A mosasaurine Mosasaurus M. missouriensis[3] A mosasaurine Platecarpus P. tympaniticus[3] A plioplatecarpine Prognathodon P. rapax[4] A mosasaurine Selmasaurus S. russelli[3] A plioplatecarpine Tylosaurus T. proriger[4] A tylosaurine Very rare elasmosaurs are present in this formation.