Geologic Eras

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Fossil collecting is a way to connect with the past. There’s something mysterious and powerful about holding a 400-million-year-old creature in the palm of your hand.

Timeline showing the geological evolution of Earth, with brief explanations of each period

Excellent interactive tool for a review of of various geologic eras, as well as the formation and structure of the earth and it's atmosphere.

6th grade test Study Guide

Great Outline of basics information on glaciers and deposits