The Collaborative International Dictionary of English v.0.48:

Saururae \Sau*ru"rae\, n. pl. [NL., fr. Gr. ? a lizard + ? a
   tail.] (Paleon.)
   An extinct order of birds having a long vertebrated tail with
   quills along each side of it. Archaeopteryx is the type. See
   Archaeopteryx, and Odontornithes.
   [1913 Webster]