By Natural Philosopher Mike Prestwood
Timeline Story

First True Animals – Comb Jellyfish

First True Animals – Comb Jellyfish

When: 540 Million BCE
From Year 0 (BCE/CE): -560000000
Post Date: 09/12/0000

Through genetic analyses, scientists now believe the Comb Jellyfish is the earliest known true animal to evolve on Earth. Prior to this genetic analyses, simple sponges were thought to have evolved first.

  • Kingdom: Animalia > Phylum: Ctenophora > Class: Tentaculata
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