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LIFE ATLAS 3DALL LIFE. CONNECTED.
See it in the 3D treeAll groups

Three truths

Timed
Branched off about 233 million years ago · the last 5.5% of life's story
Named
No living species
Weighed
Extinct: no biomass today.

Eukaryotes · animals

Horned and armoured dinosaurs

Extinct · died out about 66 million years ago, end of the Cretaceous

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A full profile for this group has not been written yet. Its place in the tree and its dates are shown below.

Triceratops, Stegosaurus and the duck-billed dinosaurs.

Branched off
About 233 million years ago (approximate)
Parent lineage
Dinosaurs

Classification

  1. First common ancestor (LUCA)
  2. › Archaea
  3. › Asgard archaea
  4. › Heimdall and complex-cell line
  5. › Complex cells (eukaryotes)
  6. › Amorphea
  7. › Opisthokonts
  8. › Holozoa
  9. › Animals
  10. › Parahoxozoa
  11. › Bilaterians
  12. › Deuterostomes
  13. › Chordates
  14. › Vertebrates
  15. › Jawed vertebrates
  16. › Bony vertebrates
  17. › Lobe-finned vertebrates
  18. › Four-limbed vertebrates
  19. › Amniotes
  20. › Reptiles and birds
  21. › Archosaurs
  22. › Dinosaurs
  23. › Horned and armoured dinosaurs

Sources