| details |
Llandoverian |
Wenlockian |
Paraguay |
Wood,G.D. et al. Chitinozoans and microplankton from the Silurian Vargas Pena Shale, (Itacurubi Group) Chaco Basin, Paraguay. |
1988 |
| details |
Devonian |
Permian |
USSR(Ukrainian SSR) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Gorstian |
Ludfordian |
Wales(Brecknockshire) |
Dorning,K.J. Silurian acritarch distribution in the Ludlovian shelf Sea of South Wales and Welsh Borderland. (In: Microfossils from Recent and Fossil Shelf Seas. J.W.Neale and M.D. Brasier. editors) |
1981 |
| details |
Gorstian |
Ludfordian |
Wales(Carmarthenshire) |
Dorning,K.J. Silurian acritarch distribution in the Ludlovian shelf Sea of South Wales and Welsh Borderland. (In: Microfossils from Recent and Fossil Shelf Seas. J.W.Neale and M.D. Brasier. editors) |
1981 |
| details |
Eifelian |
Late Devonian |
Algeria |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Precambriam |
Holocene |
Nd |
Guy-Ohlson,D. Green and Blue-Green algae. 7B-Prasinophycean algae. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Emsian |
Givetian |
Brazil |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Late Llandoverian |
Early Wenlockian |
Indiana |
Wood,G.D. Paleoecologic and biostratigraphic significance of chitinozoans and microplankton from the Lower Silurian Osgood Member of the Salamonite Dolomite, Indiana and Kentucky, USA. |
1988 |
| details |
Late Llandoverian |
Early Wenlockian |
Kentucky |
Wood,G.D. Paleoecologic and biostratigraphic significance of chitinozoans and microplankton from the Lower Silurian Osgood Member of the Salamonite Dolomite, Indiana and Kentucky, USA. |
1988 |
| details |
Late Devonian |
Early Carboniferous |
China(Tibet) |
Gao,L. Late Devonian and Early Carboniferous acritarchs from Nyalam County, Xizang, (Tibet), China. |
1984 |
| details |
Late Gothlandian |
Devonian |
Nd |
Downie,C. Observations on the nature of the acritarchs |
1973 |
| details |
Wenlockian |
|
Indiana |
Wood,G.D. Acritarchs, spores, and plant detritus from the Silurian, (Wenlockian) Waldron Shale of southeastern Indiana. |
1978 |
| details |
Gedinnian |
|
France(Manche) |
Poncet,J. et al. New stratigraphic data on the Comprehensive Series (D1-S4), of Cotentin. |
1971 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
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 Gothlandian |
|
Indiana |
Wood,G.D. Biostratigraphic and paleoecologic significance of acritarchs from the Waldron Formation, (Lower Silurian), midcontinent, United States |
1984 |
| details |
Early Gothlandian |
|
Kentucky |
Wood,G.D. Biostratigraphic and paleoecologic significance of acritarchs from the Waldron Formation, (Lower Silurian), midcontinent, United States |
1984 |