DeVore, M. L.; Pigg, K. B.; Dilcher, D. L.; Freile, D. (2014). Catahoulea grahamii, a new genus and species of fagaceous involucres from the Oligocene Catahoula Formation, central Texas, and the middle Eocene Claiborne Formation of Kentucky and Tennessee, U.S.A. Pp. 39-50 in W. D. Stevens, O. M. Montiel, P. H. Raven, Eds.: Paleobotany and Biogeography. Missouri Botanical Garden Press.
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DeVore, M. L.; Pigg, K. B.; Dilcher, D. L.; Freile, D.
2014
Catahoulea grahamii, a new genus and species of fagaceous involucres from the Oligocene Catahoula Formation, central Texas, and the middle Eocene Claiborne Formation of Kentucky and Tennessee, U.S.A. Pp. 39-50 in W. D. Stevens, O. M. Montiel, P. H. Raven, Eds.: Paleobotany and Biogeography. Missouri Botanical Garden Press.