| original |
Middle Devonian |
Early Mississippian |
Indiana |
Boneham,R.F. Acritarchs (Leiosphaeridia) in the New Albany Shale of Southern Indiana. |
1970 |
| details |
Late Devonian |
Early Mississippian |
Ohio |
Eames,L.E. Palynology of the Berea Sandstone and Cuyahoga Group of northeastern Ohio. |
1974 |
| details |
Frasnian |
Famennian |
Indiana |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Arenigian |
|
China(Hupei) |
Lu,L.-C. Acritarchs from the Dawan Formation (Arenigian) of Huanghuachang in Yichang, western Hubei. |
1987 |
| details |
Early Mississippian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Nammalian |
Spathian |
China(Kiangsu) |
Huang,P. Early Triassic sporopollen and acritarchs in Suburbs of Nanjing |
1991 |