DiMichele, William A., Tabor, N. J., Chaney, Dan S., and Nelson, W. J. 2006. "
From wetlands to wet spots: Environmental tracking and the fate of Carboniferous elements in Early Permian tropical floras." In
Wetlands trough time: Geological Society of America Special Paper 399. Greb, S. F. and DiMichele, William A., editors. 223–248. Geological Society of America.