Ravn,R.L.

Author:
Ravn,R.L.

Year:
1986

Title:
Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa

Reference:

Ravn,R.L. (1986) Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa Iowa Geological Survey,Technical Paper # 7 P. 1- 244

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Genus	Species	Country(Region)	From	To
Cristatisporites	Cristatisporites indignabundus	Iowa	Morrowan	Atokan
Cristatisporites	Cristatisporites spinifer	Iowa	Atokan
Cuneisporites	Cuneisporites rigidus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites aspersus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites aureus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites breviradiatus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites fuscus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites lasius	Iowa	Morrowan	Desmoinesian
Cyclogranisporites	Cyclogranisporites leopoldi	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites microgranus	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites minutus	Iowa	Morrowan	Desmoinesian
Cyclogranisporites	Cyclogranisporites obliquus	Iowa	Morrowan	Desmoinesian
Cyclogranisporites	Cyclogranisporites orbicularis	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites parvus	Iowa	Morrowan	Desmoinesian
Cyclogranisporites	Cyclogranisporites peppersii sp. nov.	Iowa	Middle Pennsylvanian
Cyclogranisporites	Cyclogranisporites sp. McGr.& Owen.,1966 sp. nov.	Nd	Nd
Cyclogranisporites	Cyclogranisporites sp.1 sp. nov.	Iowa	Desmoinesian