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apr 28, 438000000 BC - Crinoid
Description:
https://pubs.usgs.gov/of/1997/0091a/report.pdf
Added to timeline:
Digital Geologic Time Scale
By
Adrian Dang
29 Oct 2018
0
0
450
Date:
apr 28, 438000000 BC
Now
~ 5883516 years ago
Images:
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