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
Granitriletes	Granitriletes parvus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites aculeolatus	Iowa	Middle Pennsylvanian
Granulatisporites	Granulatisporites aculeolatus	Illinois	Middle Pennsylvanian
Granulatisporites	Granulatisporites adnatoides	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites adnatus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites convexus	Nd	Nd
Granulatisporites	Granulatisporites granularis	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites granulatus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites latigranifer	Iowa	Atokan
Granulatisporites	Granulatisporites levis	Iowa	Middle Pennsylvanian
Granulatisporites	Granulatisporites levis	Illinois	Middle Pennsylvanian	Late Pennsylvanian
Granulatisporites	Granulatisporites microgranifer	Iowa	Middle Pennsylvanian
Granulatisporites	Granulatisporites pallidus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites parvigranulatus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites parvus	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites piroformis	Iowa	Morrowan	Desmoinesian
Granulatisporites	Granulatisporites sp.2 sp. nov.	Iowa	Middle Pennsylvanian