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
Florinites	Florinites pellucidus	Iowa	Morrowan	Early Missourian
Florinites	Florinites similis	Iowa	Morrowan	Desmoinesian
Florinites	Florinites visendus	Iowa	Morrowan	Atokan
Florinites	Florinites volans	Iowa	Atokan
Foveolatisporites	Foveolatisporites clarus	Iowa	Middle Pennsylvanian
Foveolatisporites	Foveolatisporites clarus	France(Lorraine)	Early Stephanian
Foveosporites	Foveosporites avcinii	Iowa	Morrowan	Atokan
Foveosporites	Foveosporites avcinii	Iowa	Late Namurian	Westphalian A
Foveosporites	Foveosporites futilis	Iowa	Morrowan	Desmoinesian
Foveosporites	Foveosporites futilis	Oklahoma	Springerian
Foveosporites	Foveosporites insculptus	Nd	Desmoinesian
Gorgonispora	Gorgonispora minima	Iowa	Morrowan
Granasporites	Granasporites	Nd	Nd
Granasporites	Granasporites medius	Iowa	Morrowan	Early Missourian
Granisporites	Granisporites minutus	Iowa	Morrowan	Desmoinesian
Granitriletes	Granitriletes granifer	Iowa	Morrowan	Desmoinesian
Granitriletes	Granitriletes microgranifer	Iowa	Middle Pennsylvanian