I have checked that these links exist (last checked December 2010). At least at one time they were all fossil related. While the link existence check is automated, the content check is not. Even pages that persist may have their content deleted, get co-opted, etc.
If you find a problem link, let us know.      
Times have changed since I first compiled this list. Google is now available. If you want particular information, e.g. "trilobites", I would go there first. The first two sites returned by Google are the Wikipedia entry (another good place to start) and the "Guide to the Orders of Trilobites"listed below!

Note:

These pages have not been generally reviewed, but some particularly informative sites are marked by a  X.
The sites selling material are provided solely as a resource and should in no way be assumed to have been vouched for by PSoA or its members.

Austin and Texas

National Organizations

News

Periods

Locations

Clubs Outside Texas

Museums and Universities

Species

Vertebrates

Dinosaurs

Plesiosaurs and Mosasaurs

Mammals

Fish and Sharks

Invertebrates

Plants

Other Lists

As you will have noticed, many of the other sites listed on this page have their own extensive lists.

Educational and Kids

Trades and Dealers