Geologic Time Large Clock
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![Geologic Time Large Clock Geologic Time Large Clock](https://rlv.zcache.com/geologic_time_large_clock-rcc2481cca0834a75b182e4e21b1dacfd_s0ysk_8byvr_500.jpg)
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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.