Black River Fossils
- Extensive database of collecting activities of amateurs who search for fossil shark teeth and other fossils in the United States.
- http://www.blackriverfossils.org/

Fossil Sharks and Rays from the Cretaceous of The Netherlands
- Information and images of primarily Maastrichtian shark and ray fossil taxa. Includes discussions of collecting localities and links to other resources.
- http://home.zonnet.nl/jbastiaansen/index.html

Ancient Sharks
- A detailed look at the evolutionary history of sharks and Shark-like fishes from the Shark Attacks website.
- http://www.sharkattacks.com/prehistoric.htm

Elasmo
- Provides information on the extinct and extant elasmobranch teeth
- http://www.elasmo.com/