| 单词 | sauropterygian | 
| 释义 | saur·op·ter·yg·i·an   (sô-rŏp′tə-rĭjē-ən) n.  Any of various extinct aquatic reptiles of the group Sauropterygia that flourished during the Mesozoic Era and included the plesiosaurs. [From New Latin Sauropterygia, superorder name : Greek sauros, lizard + Greek pterux, pterug-, wing, flipper; see  pet- in the Appendix of Indo-European roots.] saur·op′ter·ygi·an adj. | 
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