tagged with: geological time in perspective, geology, geological age, earth's history, swirl, timeline, geologist, earth scientist, science, scientist, educational, epoch, period, eons, wordsunwords, attitude, wordsandunwords, science in society
Take a swirl through Earth's history with any of these "Geological Time In Perspective" gifts. Featuring the various time periods of Earth. Scientific educational Earth timeline gifts for earth scientists and earth historians -- no matter what age you are!
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