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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
Vestispora Vestispora foveata Iowa Middle Pennsylvanian
Vestispora Vestispora irregularis Iowa Desmoinesian
Vestispora Vestispora laevigata Iowa Middle Pennsylvanian
Vestispora Vestispora lucida Iowa Middle Pennsylvanian
Vestispora Vestispora luminata Iowa Middle Pennsylvanian
Vestispora Vestispora profunda Iowa Middle Pennsylvanian
Vestispora Vestispora pseudoreticulata Iowa Middle Pennsylvanian
Vestispora Vestispora reticulata Iowa Atokan
Vestispora Vestispora tortuosa Iowa Morrowan Desmoinesian
Vestispora Vestispora wanlessii Iowa Atokan
Vestisporites Vestisporites irregularis Iowa Middle Pennsylvanian
Vestisporites Vestisporites laevigatus Iowa Middle Pennsylvanian
Vestisporites Vestisporites lucidus Iowa Middle Pennsylvanian
Waltzispora Waltzispora polita Iowa Morrowan Atokan
Waltzispora Waltzispora prisca Iowa Morrowan Desmoinesian
Waltzispora Waltzispora sagittata Iowa Morrowan Atokan
Wapellites Wapellites variabilis Iowa Morrowan Desmoinesian