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Author - title
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| details | Early Pennsylvanian | West Virginia | Dolph,G.E. The estimation of species richness in Pennsylvanian Coal Swamp communities. (In: Laboratory Exercises in Cell and Molecular Biology, Genetics, and Development. J.C.Glase, editor) | 1996 | |
| details | Stephanian | Westphalian D | Kansas | Peppers,R.A. Palynology of the Lost Branch Formation of Kansas: New insight the major floral transition at the Middle - Upper Pennsylvanian boundary. | 1997 |