sauropterygia

Noun
  1. Extinct marine reptiles: plesiosaurs;
    Nothosaurs (synset 101727881)
    is a type of: animal order - the order of animals
    member holonym:
    belongs to: archosauria, subclass archosauria - a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
    same as: order sauropterygia

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