Explore
Interactive Tools
Free interactive tools to explore, identify, and compare fossil specimens across geologic history.
Geologic Timeline Explorer
Navigate 4.6 billion years of Earth history on an interactive timeline. Zoom into eras, click periods to explore, and see where mass extinctions reshaped life.
Fossil Identification Guide
Not sure what type of fossil you have? Answer a few guided questions about your specimen and get an instant identification with links to learn more.
Prehistoric Size Comparison
How big was T. rex compared to a human? Visualize the sizes of prehistoric creatures side-by-side against familiar reference objects like cars, buses, and blue whales.