nothosaur

 
Pronunciation: /ˈnəʊtəsɔː, ˈnəʊθ-/

noun

  • a semiaquatic fossil carnivorous reptile of the Triassic period, having a slender body and long neck, related to the plesiosaurs.
    • Infraorder Nothosauria, superorder Sauropterygia

Origin:

1930s: from modern Latin Nothosauria, from Greek nothos 'false' + sauros 'lizard'