| original |
Early Gothlandian |
|
Brazil(Para) |
da Costa,N.M. Pallachitina and Spathachitina, two new Silurian chitinozoa genera from Brazil. |
1970 |
| details |
Early Gothlandian |
|
Brazil(Para) |
da Costa,N.M. Silurian chitinozoa of Igarape Da Rainha, State of Para |
1971 |
| details |
Early Gothlandian |
|
Brazil(Amazonas) |
da Costa,N.M. Brazilian chitinozoans and their stratigraphic importance |
1971 |
| details |
Early Gothlandian |
|
Brazil(Para) |
da Costa,N.M. Stratigraphic distribution and biochronology of chitinozoans from the Trombetas Formation, State of Para. |
1974 |