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
Convolutispora	Convolutispora florida	Iowa	Desmoinesian
Convolutispora	Convolutispora fromensis	Iowa	Morrowan	Atokan
Convolutispora	Convolutispora lepida	Iowa	Morrowan
Convolutispora	Convolutispora mellita	Iowa	Morrowan	Desmoinesian
Convolutispora	Convolutispora papillosa	Iowa	Morrowan
Convolutispora	Convolutispora sp.1 sp. nov.	Iowa	Atokan
Convolutispora	Convolutispora varicosa	Iowa	Desmoinesian
Convolutisporites	Convolutisporites floridus	Iowa	Desmoinesian
Convolutisporites	Convolutisporites mellitus	Iowa	Morrowan	Desmoinesian
Corbulispora	Corbulispora subalveolaris	Iowa	Morrowan	Desmoinesian
Cordaitina	Cordaitina sp.1 sp. nov.	Iowa	Middle Pennsylvanian
Cordylosporites	Cordylosporites condylosus	Ireland	Early Famennian	Middle Tournaisian
Cordylosporites	Cordylosporites papillatus	Iowa	Morrowan	Atokan
Costatascyclus	Costatascyclus crenatus	Iowa	Morrowan	Atokan
Crassispora	Crassispora annulata	Iowa	Middle Pennsylvanian
Crassispora	Crassispora kosankei	Iowa	Morrowan	Early Missourian
Cristatisporites	Cristatisporites connexus	Iowa	Morrowan