| details |
Late Ordovician |
|
India |
Prasad,K.N. Review of Precambrian microfossils from Peninsular India. (In: Stromatolites, Characteristics and Utility) |
1980 |
| details |
Vendian |
|
India(Himachal Pradesh) |
Kumar,G. et al. The Precambrian-Cambrian boundary problem and its prospects, northwest Himalaya, India. |
1984 |
| details |
Precambriam |
|
India |
Maithy,P.K. Indian Precambrian biota. (In: Proceedings, Symposium and Technical Sessions. R.S. Tiwari, editors) |
1984 |
| details |
Late Givetian |
|
Texas |
Chaiffetz,M.S. Devonian, North American; USA biostratigraphy, palaeoecology, descriptive Palaeontology: Systematics. |
1979 |
| details |
Pridolian |
|
Baltic |
Paris,F. et al. A revised chitinozoan classification |
1999 |