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dec 1, 544000000 BC - sea pen
Description:
http://www.ucmp.berkeley.edu/cnidaria/pennatulacea.html
The sea pen went extinct 4.6 billion years ago.
Added to timeline:
new timeleine
By
Natalia Soto
26 Oct 2018
0
1
465
Date:
dec 1, 544000000 BC
Now
~ 5883516 years ago
Images:
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