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Animal evolution, Listed least to most evolved. - Coggle Diagram

- - - - broke off from amphibians and seperated birds and reptiles
  - - - lizards, snakes, scales can exist with little water
  - - - first out of the water
  - - - light feathers allowed them to adapt to flight.
  - - - jawless vs jawed
  - - - single lower jaw
  - - - social creatures with large brains
- - - - Exoskeletons and go through metamorphosis as they age
  - - - "spiny skin"Ed and have a water vascular system that allows them to move,