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2. The Hunton Group: sequence stratigraphy, facies, dolomitization, and karstification;Al-Shaieb,2001
3. Hunton Group (Late Ordovician, Silurian, and Early Devonian) in the Anadarko Basin of Oklahoma;Amsden,1975
4. Hunton Group (Late Ordovician, Silurian and Early Devonian) in the Arkoma Basin of Oklahoma;Amsden,1980
5. Archaeopteris (Progymnospermopsida) from the Devonian of southern Africa;Anderson;Botanical Journal of the Linnean Society,1995