eurhipidurous

from The Collaborative International Dictionary of English v.0.48

Eurhipidurous \Eu*rhip`i*du"rous\, a. [Gr. e'y^ well + ? a fan +
   ? a tail.] (Zo["o]l.)
   Having a fanlike tail; belonging to the Eurhipidur[ae], a
   division of Aves which includes all living birds.
   [1913 Webster]