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
Spelaeotriletes	Spelaeotriletes arenaceus	Iowa	Morrowan	Atokan
Spelaeotriletes	Spelaeotriletes triangulus	Iowa	Morrowan	Atokan
Spencerisporites	Spencerisporites radiatus	Iowa	Morrowan
Spinososporites	Spinososporites aculeatus	Iowa	Atokan
Spinososporites	Spinososporites echinatus	Iowa	Middle Pennsylvanian
Spinososporites	Spinososporites falcatus	Iowa	Atokan
Spinososporites	Spinososporites falcatus	Nd	Paleozoic
Spinososporites	Spinososporites globosus	Iowa	Middle Pennsylvanian
Spinososporites	Spinososporites latigranifer	Iowa	Atokan
Spinososporites	Spinososporites microspinosus	Nd	Nd
Spinososporites	Spinososporites spinosus	Nd	Nd
Spinososporites	Spinososporites spinulistratus	Iowa	Middle Pennsylvanian
Spinosporites	Spinosporites exiguus	Iowa	Middle Pennsylvanian
Spinosporites	Spinosporites sp.1 sp. nov.	Iowa	Desmoinesian
Spore	Spore type 18k sp. nov.	Iowa	Atokan
Sporites	Sporites ellipsoides	Iowa	Morrowan	Desmoinesian
Sporonites	Sporonites ellipsoides	Iowa	Morrowan	Desmoinesian