amniota

/ˌæmniˈoʊtə/
noun
  1. A group of vertebrates (including reptiles, birds, and mammals) whose embryos develop inside an amnion.
    • Scientists study Amniota to understand how different species are related.
    • The evolution of Amniota allowed animals to reproduce on land without returning to water.
    • Humans, lizards, and birds all belong to the group called Amniota.
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