| details |
Kungurian |
Ufimian |
China(Xinjiang Uygur) |
Ouyang,S. et al. Palynostratigraphic correlation of the Permian System of Northern Xinjiang and the Cis-Urals. |
1999 |
| details |
Gzelian |
Asselian |
Kazakstan |
Dunn,M.T. Palynology of the Carboniferous-Permian boundary stratotype, Aidaralash Creek, Kazakhstan. |
2001 |
| details |
Sakmarian |
Kungurian |
Brazil(Amazonas) |
Matsuda,N.S. et al. Lithostratigraphic review of the Tapajгs Group, Middle Carboniferous - Permian of the Amazonas Basin. |
2004 |
| details |
Cisuralian |
Middle Guadalupian |
Brazil(Rio Grande Sul) |
Souza,P.A. et al. Progress on the palynostratigraphy of the Permian strata in Rio Grande do Sul State, ParanЎ Basin, Brazil. |
2005 |