tetrapod: Quick Facts

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Last updated

Nov. 13, 2026

News •

Scientists discover that necks didn't evolve for the reason we thought • Nov. 11, 2026, 7:11 PM ET (Science Daily)

Facts

Also Known As	Tetrapoda

Photos

Diagram of the tree of life based on the three-domain system, showing Archaea, Bacteria, and Eukaryota branching into four kingdoms: Plants, Animals, Fungi, and Protista, with illustrations of representative organisms for each group.

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Topics

reptile Bird mammal amphibian labyrinthodont Anthracosauria Ventastega curonica Temnospondyli Seymouria Diadectes fish Amniota chondrichthyan agnathan 5 Vertebrate Groups 10 Animals With Evolutionary Traits Plucked Straight Out of a Nightmare Tiktaalik roseae How old is the oldest living Greenland shark?placoderm spiny shark

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