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
Sporonites	Sporonites latigranifer	Iowa	Atokan
Sporonites	Sporonites latigranifer	W.Germany(N.Rhine)	Westphalian B
Sporonites	Sporonites reticulocingulum	Iowa	Morrowan	Desmoinesian
Sporonites	Sporonites sphaerotriangulus	Iowa	Middle Pennsylvanian
Sporonites	Sporonites sphaerotriangulus	W.Germany(N.Rhine)	Westphalian B
Sporonites	Sporonites spinososaetosus	Iowa	Middle Pennsylvanian
Sporonites	Sporonites spinososaetosus	W.Germany(N.Rhine)	Westphalian B
Stellisporites	Stellisporites	Nd	Nd
Stellisporites	Stellisporites inflatus	Iowa	Atokan
Stenozonotriletes	Stenozonotriletes occultus sp. nov.	Iowa	Desmoinesian
Stenozonotriletes	Stenozonotriletes sp.1 sp. nov.	Iowa	Morrowan
Tantillus	Tantillus triquetrus	Iowa	Morrowan	Desmoinesian
Tetanisporites	Tetanisporites granulatus	Iowa	Morrowan	Desmoinesian
Thymospora	Thymospora pseudothiessenii	Iowa	Middle Pennsylvanian
Thymospora	Thymospora pseudothiessenii	Iowa	Desmoinesian	Early Missourian
Thysanites	Thysanites densus	Iowa	Atokan
Tinnulisporites	Tinnulisporites microsaccus	Iowa	Morrowan	Desmoinesian