| details |
Ludlovian |
Gedinnian |
Algeria |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Gedinnian |
Brazil |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Gedinnian |
France |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Gedinnian |
Europe |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Ludlovian |
Gedinnian |
Canada |
Jardin©,S. Microplankton (Acritarchs), and the stratigraphic limits of the Upper Silurian to Upper Devonian. |
1972 |
| details |
Early Tremadocian |
|
USSR(Estonian SSR) |
Yankauskas,T.V. et al. Micropaleontological characteristics of the Tremadocian Ulgase Member of Estonia. |
1972 |
| details |
Late Permian |
|
England |
Pattison,J. et al. A review of Late Permian and Early Triassic biostratigraphy in the British Isles. |
1973 |
| details |
Early Permian |
|
Nd |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Ufimian |
Tatarian |
Australia(W.Australia) |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Scythian |
|
Canada |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Scythian |
|
Germany |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Scythian |
|
Australia |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Middle Triassic |
|
Europe |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Carnian |
|
Czechoslovakia |
Tappan,H. et al. Smaller protistan evidence and explanation of the Permian-Triassic crisis. (In: The Permian and Triassic systems and their mutual boundary) |
1973 |
| details |
Late Frasnian |
Famennian |
USSR(Ukrainian SSR) |
Sergeeva,L.O. Microphytofossils from Devonian Saliferous deposits of the Dnieper-Donets Basin. (In: Fossil Fauna and Flora of Ukraine.) |
1973 |
| details |
Callovian |
|
USSR(Arkhangelsk Oblast) |
Maslov,V.M. et al. Middle Jurassic deposits of the Vychegda, Luza and Mezen River Basins. |
1973 |
| details |
Frasnian |
|
France(Ille-et-Vilaine) |
Babin,C. et al. The discovery of Upper Devonian in the Nenez Belair Synclinorium, (Breton Massif). Paleogeographic implications. |
1973 |