Author:
Ravn,R.L.
Year:
1981
Title:
Palynostratigraphy of Lower and Middle Pennsyl Vanian Coals of Iowa, with special reference to the Atokan-Desmoinesian boundary
Reference:
Ravn,R.L. (1981) Palynostratigraphy of Lower and Middle Pennsyl Vanian Coals of Iowa, with special reference to the Atokan-Desmoinesian boundary Geological Society of America, Abstracts with Program, Annual Meeting Vol. 13 # 6 P. 314- 314
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Genus Species Country(Region) From To
Densosporites Densosporites annulatus Iowa Atokan Desmoinesian
Dictyotriletes Dictyotriletes bireticulatus Iowa Atokan Desmoinesian
Grumosisporites Grumosisporites varioreticulatus Iowa Atokan Desmoinesian
Laevigatosporites Laevigatosporites globosus Iowa Atokan Desmoinesian
Reticulatisporites Reticulatisporites papillatus Iowa Atokan Desmoinesian
Schopfites Schopfites dimorphus Iowa Atokan Desmoinesian
Schulzospora Schulzospora elongata Iowa Atokan Desmoinesian
Thymospora Thymospora pseudothiessenii Iowa Atokan Desmoinesian
Torispora Torispora securis Iowa Atokan Desmoinesian