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First True Animals – Comb Jellyfish

By Michael Alan Prestwood

Sun 12 Sep 2021
Published 5 years ago.
Updated 2 months ago.
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Jellyfish moving through water
Jellyfish moving through water

First True Animals – Comb Jellyfish

555 Million Years Ago (+/- 5 million)
Nerve nets and muscle cells

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.

— map / TST —

Michael Alan Prestwood
Author & Natural Philosopher
Prestwood writes on science-first philosophy, with particular attention to the convergence of disciplines. Drawing on his TST Framework, his work emphasizes rational inquiry grounded in empirical observation while engaging questions at the edges of established knowledge. With TouchstoneTruth positioned as a living touchstone, this work aims to contribute reliable, evolving analysis in an emerging AI era where the credibility of information is increasingly contested.
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Column Menu
June 2026
»COLUMN ARCHIVE
Column Research….
1. Timeline Story
Secular Spirituality Settles
2. Linked Quote
“Extraordinary claims require extraordinary evidence.”
3. Science FAQ »
What is the difference between a spiritual and empirical belief?
4. Philosophy FAQ »
What is secular spirituality?
5. Critical Thinking FAQ »
How does spirituality relate to public belief?
6. History FAQ!
Is secular spirituality supported in history and science?
Bonus Deep-Dive Article
The Material-Spiritual Framework: A Philosophy of Spirituality

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