Noun order pelycosauria has 1 sense
  1. Pelycosauria, order Pelycosauria - edaphosaurus; dimetrodon
    --1 is a kind of animal order
    --1 is a member of Synapsida, subclass Synapsida
    --1 has members:
     pelycosaur; Edaphosauridae, family Edaphosauridae; genus Dimetrodon
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