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
Endosporites	Endosporites mediapudens	Iowa	Morrowan	Early Missourian
Florinites	Florinites pellucidus	Iowa	Morrowan	Early Missourian
Florinipollenites	Florinipollenites mediapudens	Iowa	Morrowan	Early Missourian
Florinipollenites	Florinipollenites pellucidus	Iowa	Morrowan	Early Missourian
Deltoidospora	Deltoidospora gracilis	Iowa	Middle Pennsylvanian
Laevigatisporites	Laevigatisporites gracilis	Iowa	Middle Pennsylvanian
Leiotriletes	Leiotriletes gracilis	Iowa	Middle Pennsylvanian
Granulatisporites	Granulatisporites sp.2 sp. nov.	Iowa	Middle Pennsylvanian
Deltoidospora	Deltoidospora levis	Iowa	Middle Pennsylvanian
Granulatisporites	Granulatisporites levis	Iowa	Middle Pennsylvanian
Leiotriletes	Leiotriletes laevis	Iowa	Middle Pennsylvanian
Ahrensisporites	Ahrensisporites vagus	Iowa	Middle Pennsylvanian
Deltoidospora	Deltoidospora sphaerotriangula	Iowa	Middle Pennsylvanian
Sporonites	Sporonites sphaerotriangulus	Iowa	Middle Pennsylvanian
Laevigatisporites	Laevigatisporites sphaerotriangulus	Iowa	Middle Pennsylvanian
Punctatisporites	Punctatisporites sphaerotriangulatus	Iowa	Middle Pennsylvanian
Planisporites	Planisporites sphaerotriangulatus	Iowa	Middle Pennsylvanian