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First Multicellular Animals

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First Multicellular Animals

640 Million Years Ago (+/- 20 million)
Stable cell adhesion and tissue specialization

Organisms that consist of more than one cell took several billion years to evolve from unicellular organisms. All species of animals, land plants and most fungi are multicellular, as well as many algae. A few organisms are partially both such as slime molds and social amoebae.

  • Domain: Eukaryota > Kingdom: Animalia > Phylum: Porifera (sponges)


That History Story, 

was first published on TST 5 years ago.
All story is part of the broader TST project.
These short entries help separate what is known, what is inferred, and what remains open. That distinction is where careful thinking begins.

The end!

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