A fossil monotreme from the South American Paleocene, showing that the geographical history of monotremes extends beyond their living Australasian range. [ref]

Ancestors (14)

  1. Monotreme
  2. Mammal
  3. Mammaliaform
  4. Cynodont
  5. Therapsid
  6. Synapsid
  7. Amniote
  8. Tetrapod
  9. Vertebrate
  10. Animal
  11. Eukaryote
  12. Organism
  13. Biology
  14. Home

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