This Geologic Time Scale provides a directory of links to web pages for each time interval.
The links focus on:
- general information on the time period
- paleogeography for the period
- representative fossils of the period
Help Maintain This Site
* Ma = million years ago
Links to the other Geologic Time Scales on the web:
Many of the links on the directory pages were found by members of the Spring 1998 "History of Life" course at San Francisco State University.