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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
Punctatisporites Punctatisporites setulosus Illinois Middle Pennsylvanian Late Pennsylvanian
Punctatisporites Punctatisporites sinuatus Iowa Morrowan Atokan
Punctatisporites Punctatisporites sphaerotriangulatus Iowa Middle Pennsylvanian
Punctatisporites Punctatisporites spinosus Nd Nd
Punctatisporites Punctatisporites spinulistratus Iowa Middle Pennsylvanian
Punctatisporites Punctatisporites stramineus Iowa Atokan Early Missourian
Punctatisporites Punctatisporites variusetosus Iowa Desmoinesian
Punctatisporites Punctatisporites variusetosus Illinois Conemaugh Monongahela
Punctatisporites Punctatisporites verrucifer Iowa Desmoinesian
Punctatisporites Punctatisporites verrucosus Iowa Morrowan Desmoinesian
Punctatosporites Punctatosporites ellipsoideus Iowa Morrowan Desmoinesian
Punctatosporites Punctatosporites granifer Iowa Middle Pennsylvanian
Punctatosporites Punctatosporites minutus Iowa Atokan Early Missourian
Punctatosporites Punctatosporites punctatus Iowa Desmoinesian
Punctatosporites Punctatosporites rotundus Iowa Middle Pennsylvanian
Pustulatisporites Pustulatisporites crenatus Iowa Morrowan Desmoinesian
Pustulatisporites Pustulatisporites papillosus Iowa Morrowan Atokan