Mosasauria

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Mosasauria \Mos`a*sau"ri*a\, n. pl. [NL. See {Mosasaurus}.]
     (Paleon.)
     An order of large, extinct, marine reptiles, found in the
     Cretaceous rocks, especially in America. They were
     serpentlike in form and in having loosely articulated and
     dilatable jaws, with large recurved teeth, but they had


     paddlelike feet. Some of them were over fifty feet long. They
     are, essentially, fossil sea serpents with paddles. Called
     also {Pythonomarpha}, and {Mosasauria}.
     [1913 Webster]