A soft-tissue propulsive structure of the tail. It should not be drawn as a directly preserved fossil feature when only skeletal evidence is available.

Ancestors (19)

  1. Cetacea
  2. Artiodactyla
  3. Laurasiatheria
  4. Placental mammal
  5. Eutheria
  6. Theria
  7. Mammal
  8. Mammaliaform
  9. Cynodont
  10. Therapsid
  11. Synapsid
  12. Amniote
  13. Tetrapod
  14. Vertebrate
  15. Animal
  16. Eukaryote
  17. Organism
  18. Biology
  19. Home

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