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CHORDATES RISE UP (sep 15, 540000000 BC – may 15, 500000000 BC)

Description:

Chordates have muscle segments, gill slits, dorsal nerve cords, and notochords; this phylum encompasses most modern life

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ByJoe
17 Dec 2018
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Date:

sep 15, 540000000 BC
may 15, 500000000 BC
~ 5883516 years
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