By Natural Philosopher Michael Alan Prestwood
By Natural Philosopher Michael Alan Prestwood
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TIMELINE STORY

First True Animals – Comb Jellyfish

When: 540 Million BCE
From Year 0 (BCE/CE): -560000000
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First True Animals – Comb Jellyfish

Jellyfish moving through water
Jellyfish moving through water

First True Animals – Comb Jellyfish

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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WWB Season 7 — Returning 2026!

I’m taking this time to catch up with the paired videos for recent WWB editions, and to restructure the WWB into seasions of 10 weeks: four 1-Minute Hot Topics. Each week featureing a tidbit in science, philosophy, critical, thinking, and history. Follow the TST YouTube channel to catch all new videos. –Mike

Weekly Wisdom Builder 
Season 6: Cognition & Ideas
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December 3, 2025 Edition
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