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Amniotes - Coggle Diagram

- - - - Amniotes have lungs, not gills
        
        The abundant keratin in their skin makes it waterproof
        
        Kidneys help amniotes conserve water
        
        Fertilization takes place inside the female's body
- - - - The Therepod group included various feathered species. Since the species were too heavy to fly, the feathers most likely provided insulation
        
        Endotherm: Species that maintain body temperature by adjusting its production of metabolic heat. Animals included birds and mammals.
        
        Ectotherm: Species those body temperatures depends on its environment. Often control internal temperature through their behavior.
        
        Birds branched off from the lineage in the Jurassic
  - - - Eggs are self-contained and the mother does not need to provide nourishment to her offspring.
    - - Modern turtles have a shell on their backs, and are toothless (fossil remains show no shell and teeth).
    - - Includes both Alligators and Crocodiles
        
        Closest living relative to birds
        
        Both are highly vocal and have four-chambered hearts
  - - - Internal air cavities make birds lighter
        
        Have a high metabolism and increased oxygen supply