| original |
Late Gedinnian |
|
Oklahoma |
Loeblich,A.R.,Jr. et al. Organic-walled microplankton from the Lower Devonian, Late Gedinnian Haragan and Bois d'Arc Formations of Oklahoma, USA. Part 1. |
1976 |
| details |
Early Devonian |
|
Oklahoma |
Tappan,H. The Paleobiology of Plant Protists. |
1980 |
| details |
Late Gedinnian |
|
Oklahoma |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Gedinnian |
|
Oklahoma |
Wicander,R. Lower Devonian, (Gedinnian) acritarchs from the Haragan Formation, Oklahoma, USA. |
1986 |
| details |
Late Gedinnian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Lochkovian |
|
North America |
Le H©riss©,A. et al. Biogeography of Late Silurian acritarchs and Prasinophytes |
1997 |