Geologic Time Large Clock
- from our Affiliates
This bizarre wall clock functions as a normal clock, but features the geologic time scale instead of the hours! Starting at 4.6 billion years ago at 12:00, this clock takes you through the four eons of Earth's history (Hadean->Archean->Proterozoic->Phanerozoic), with the latter one divided into the Paleozoic, Mesozoic, and Cenozoic eras.
$38.95
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