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12 h, dec 18, 2017 y - First vertebrates
Description:
The first vertebrates on earth were formed 500 MYA.
Added to timeline:
15 Dec 2017
0
0
409
Cosmic calendar
The dates of events on the cosmic calendar.
Date:
12 h, dec 18, 2017 y
Now
~ 6 years and 4 months ago
Images:
