The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.


  • D. L. Dilcher and T. A. Lott. 2005. Fossil plants from the Union Chapel Mine, Alabama. Pennsylvanian Footprints in the Black Warrior Basin of Alabama
  • Rothwell, G. W. 1988. Cordaitales. In: C. B. Beck (ed.), Origin and Evolution of Gymnosperms. 273-297


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!