Illinois State Geological Survey 



Bulletin 90, Plate 4 



\£# Bra 



7 



•'-Av-V 



8 



vj- . 



Vir. -, 



10 



f 4* 



II 



13 



14 



15 i 



16 



r 



20 





21 



V 



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&& 



'# 



VJ* 



Peppers — Pennsylvanian Spores 



81 



