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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
Pilosisporites Pilosisporites superbus Australia(Queensland) Middle Permian
Pilosisporites Pilosisporites tereteangulatus Australia Permian
Pilosisporites Pilosisporites triquetrus Iowa Middle Pennsylvanian
Pilosisporites Pilosisporites triquetrus England(Staffordshire) Westphalian C
Pilosisporites Pilosisporites varius Sweden Rhaetian Liassic
Pilosisporites Pilosisporites williamsii sp. nov. Iowa Morrowan Desmoinesian
Pityosporites Pityosporites westphalensis Iowa Middle Pennsylvanian
Planisporites Planisporites deltoides Nd Nd
Planisporites Planisporites granifer sp. nov. Iowa Middle Pennsylvanian
Planisporites Planisporites granulatus Iowa Morrowan Desmoinesian
Planisporites Planisporites ovalis Sweden Liassic
Planisporites Planisporites sphaerotriangulatus Iowa Middle Pennsylvanian
Planisporites Planisporites spinulistratus Iowa Middle Pennsylvanian
Planisporites Planisporites verrucosus Iowa Morrowan Desmoinesian
Platysaccus Platysaccus saarensis Iowa Middle Pennsylvanian
Potonieisporites Potonieisporites elegans Iowa Morrowan Desmoinesian
Potonieisporites Potonieisporites solidus Iowa Middle Pennsylvanian