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.
First True Animals – Comb Jellyfish
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First True Animals – Comb Jellyfish
555 Million Years Ago (+/- 5 million)
Nerve nets and muscle cells
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The first true animals are the comb jellyfish which evolved about 555 million years ago.
Subject: Animal Evolution.
By 555 million years ago, animals start to emerge. The comb jellyfish is likely the first true animal. Originally, we thought simple sponges evolved furst, but genetic analyses changed that.
Flashcard.
What group do jellyfish belong to?.
Answer. Cnidarians..
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