nothosaur

from WordNet (r) 3.0 (2006)

nothosaur
    n 1: extinct marine reptile with longer more slender limbs than
         plesiosaurs and less completely modified for swimming

from The Collaborative International Dictionary of English v.0.48

nothosaur \nothosaur\ n.
   An extinct marine reptile with longer more slender limbs than
   plesiosaurs and less completely modified for swimming.
   [WordNet 1.5]

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