Fossils, Geologic Time and Evolution
Fossils are precious gifts from the geologic past.
A select set of fossil pictures from your Guide.
Of the 50 states, 38 have official state fossils or state dinosaurs (or both).
The world's most spectacular fossil sites preserve microbes and other fantastic details of prehistoric life.
Start with the eons and eras, then work your way down to the periods and epochs.
How, and why, we keep track of geologic time without using clocks or numbers.
Explaining the isotopic dating method in terms of your backyard barbecue.
Four billion years condensed into two pages.
Can you ace this millionaire-type quiz? Maybe the high stakes would leave you . . . petrified.
These aren't your father's museums: an article by your Guide introducing the new breed of online paleontology exhibits.
It's a special kind of fossilization.
The actual bodies of dead (and living) things can last nearly forever.
Doug Mann of fossil-facts-and-finds.com gives a kid-friendly explanation of this perennial question.
