by Ciro Santilli (@cirosantilli, 37)
It is quite mind blowing that this is polyphyletic on mammals and birds, what can't parallel evolution achieve??
Figure 1.
Phylogenetic tree of the vertebrates
. Source. Highlights how birds should obviously be classified as reptiles.

Ancestors (10)

  1. Warm-blooded
  2. Animal
  3. Eukarya subclade
  4. Eukaryote
  5. Species
  6. Taxonomy
  7. Biology
  8. Natural science
  9. Science
  10. Home

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