Additional
Information: The study of paleontology can be broken down in a number of ways. One way to study past life is to examine specific intervals of the earth's past. This category is for any website that deals with the study of these intervals.
By Geological Interval further on these related pages:
Arizona Sedimentary Project Image Gallery Arizona Sedimentary Project Image Gallery: A set of pictures of fossils organized by time interval. (By Geological Interval) http://www.PSIAZ.com/Schur/azpaleo/images.html
UCMP Web Time Machine UCMP Web Time Machine: A geologic timescale from the UC Berkeley Museum of Paleontology. (By Geological Interval) http://www.ucmp.berkeley.edu/help/timeform.html