| original |
Late Gedinnian |
|
Oklahoma |
Loeblich,A.R.Jr. et al. Thysanoprobolus, a new acritarch genus from the Early Devonian (Late Gedinnian) Haragan Formation of Oklahoma, USA. |
1970 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Gedinnian |
|
Tennessee |
Wood,G.D. et al. Early Devonian, (Gedinnian), organic-walled microphytoplankton and spores from the Ross Formation of Tennessee, United States. |
1985 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |