| details |
Ufimian |
Kazanian |
Brazil(Rio Grande Sul) |
Wurdig-Maciel,N.L. Ichthyodonts and Ichthyodorulites (Pisces) of the Estrada Nova Formation and their use in the stratigraphy of the Passa Dois Group |
1975 |
| original |
Kazanian |
|
Brazil(Rio Grande Sul) |
Dellazana,J.G. Contribution to the palynology of the Irati form Ation, (Permian), Rio Grande do Sul, Brazil. |
1976 |
| original |
Permian |
|
Brazil(Rio Grande Sul) |
Dellazana,J.G. Contribution to the palynology of the Irati Formation (Permian), Rio Grande do Sul, Brazil. |
1976 |
| 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, ParanŠ Basin, Brazil. |
2005 |