Comparison of miospore assemblages in the Pennsylvanian system of the Illinois Basin Coal Field with those in the Upper Carboniferous of Western Europe.
Reference:
Peppers,R.A. (1979)
Comparison of miospore assemblages in the Pennsylvanian system of the Illinois Basin Coal Field with those in the Upper Carboniferous of Western Europe. International Congress on Carboniferous Stratigraphy and Geology,Compte Rendu,9th,Abstracts of Papers
P. 161- 161