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
Densosporites	Densosporites reynoldsburgensis	Iowa	Morrowan	Atokan
Densosporites	Densosporites sphaerotriangularis	Iowa	Morrowan	Atokan
Densosporites	Densosporites spinifer	Iowa	Atokan
Densosporites	Densosporites spongeosus	Iowa	Morrowan	Atokan
Densosporites	Densosporites triangularis	Iowa	Morrowan	Atokan
Densosporites	Densosporites variabilis	Iowa	Morrowan
Diaphanospora	Diaphanospora graysonii	Canada(New Brunswick)	Tournaisian
Diaphanospora	Diaphanospora higgsii sp. nov.	S.Ireland(Wexford)	Early Famennian	Early Tournaisian
Diaphanospora	Diaphanospora higgsii sp. nov.	England	Early Aptian
Diaphanospora	Diaphanospora minor	Canada(NWT,Franklin)	Late Frasnian	Famennian
Diaphanospora	Diaphanospora parvigracila	Iowa	Morrowan	Desmoinesian
Diaphanospora	Diaphanospora plissata	W.Germany(N.Rhine)	Westphalian B
Diaphanospora	Diaphanospora sp.1 sp. nov.	Iowa	Morrowan
Diaphanospora	Diaphanospora tecta	West Virginia	Monongahela
Diatomozonotriletes	Diatomozonotriletes speciosus	Iowa	Morrowan	Desmoinesian
Dictyisporites	Dictyisporites falsus	Iowa	Morrowan	Desmoinesian
Dictyomonolites	Dictyomonolites	Iowa	Morrowan