The following selected websites are great reources to better understand geologic time - which is important for understanding rocks, minerals, and especially fossils. In addition, both the Fossils page and the Dinosaurs page have lists of excellent selected resources. You also can find helpful books at the Books & Gear page with a link to the Gator Girl Rocks Amazon Store.
- Smithsonian - National Museum of Natural History: Geologic Time
- Visualization Tools: Geologic Time & Earth History
- University of California Museum of Paleontology: The Geology Wing includes the UCMP Geological Time Machine
- U.S. Geological Survey: Geologic Time
- National Geographic - Video: Geologic Time