A comparison of the floras of the Colchester (No. 2) Coal and Francis Creek Shale


Abundant data from spore studies of the Colchester (no. 2) Coal Member and from investigations of plant compressions in the Francis Creek Shale provide an opportunity to compare the flora of the coal with that of the overlying shale in the northeastern part of the Illinois Basin. As both floras were investigated by different methods and since different… (More)


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