maiasaur

mai·a·saur (mīʹə-sôr') or mai·a·sau·ra (mī'ə-sôrʹə) n.

An ornithischian herbivorous dinosaur of the genus Maiasaura of the late Cretaceous Period of North America, noted for remains of fossilized nests and juveniles suggesting that the adults cared for their young.

  [New Latin Māiasaura, good mother lizard, genus name : Greek maia, good mother; See mā-² in Indo-European Roots + New Latin saura, feminine of saurus, lizard (from Greek sauros).]

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