Petrified Plants from the Upper Mississippian (Chester Series) of Arkansas

Abstract
Well-preserved petrified plant fossils including members of the Lepidodendrales, Calamitales, Coenopteridales, and Pteridospermales have recently been discovered in Upper Mississippian sediments of Arkansas. This constitutes the most extensive petrifaction flora now known from the Upper Mississippian of North America and should provide much needed information concerning the internal structure of late Mississippian vascular plants.

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