| original |
Kazanian |
|
USSR(Arkhangelsk Oblast) |
Koloda,N.A. Ventralvittina: A new genus of Permian ribbing pollen. |
1989 |
| details |
Ufimian |
Kazanian |
USSR(Arkhangelsk Oblast) |
Koloda,N.A. Ventralvittina: A new genus of Permian ribbing pollen. |
1989 |
| details |
Roadian |
Wordian |
Canada(Arctic) |
Utting,J. Palynostratigraphy of Permian and Lower Triassic Rocks, Sverdrup Basin, Canadian Arctic Archipelago |
1994 |
| details |
Late Kazanian |
|
Russian Platform |
Koloda,N.A. et al. Analogue of the Ufimian, Kazanian and Tatarian Stages of Russia in North - Western China based on miospores and bivalves. |
1996 |
| details |
Kazanian |
|
Russian Platform |
Koloda,N.A. et al. Analogue of the Ufimian, Kazanian and Tatarian Stages of Russia in North - Western China based on miospores and bivalves. |
1996 |
| details |
Tatarian |
|
Russian Platform |
Koloda,N.A. et al. Analogue of the Ufimian, Kazanian and Tatarian Stages of Russia in North - Western China based on miospores and bivalves. |
1996 |