- Joined
- Nov 19, 2002
- Messages
- 2,456
This link will take you to the latest
Geologic Time Scale
from the International Union of Geologic Sciences (on NORGES site).
Devonian thru Cretaceous detailed charts (PDF files) show ammonoid zonation and correlation worldwide. You should be able to date all your fossil cephs to within a few million years
Geologic Time Scale
from the International Union of Geologic Sciences (on NORGES site).
Devonian thru Cretaceous detailed charts (PDF files) show ammonoid zonation and correlation worldwide. You should be able to date all your fossil cephs to within a few million years