Tag Archives: The Occurrence of Regispongia contorta (King) in Chesterian (Upper Mississippian) Rocks of Southern Illinois and Western Kentucky

[082-19] The Occurrence of Regispongia contorta (King) in Chesterian (Upper Mississippian) Rocks of Southern Illinois and Western Kentucky

G.H. Fraunfelter The Occurrence of Regispongia contorta (King) in Chesterian (Upper Mississippian) Rocks of Southern Illinois and Western Kentucky 082-19-print

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