[医] 鳍龙目

[ noun ]
extinct marine reptiles: plesiosaurs; nothosaurs
<noun.animal>

Sauropterygia \Sau*rop`te*ryg"i*a\, n. pl. [NL., fr. Gr. ? a
lizard + ?, ?, a wing.] (Paleon.)
Same as {Plesiosauria}.


Plesiosauria \Ple`si*o*sau"ri*a\, n. pl. [NL. See
{Plesiosaurus}.] (Paleon.)
An extinct order of Mesozoic marine reptiles including the
genera Plesiosaurus, and allied forms; -- called also
{{Sauropterygia}}.