The Collaborative International Dictionary of English v.0.48:

Anallantoidea \An`al*lan*toid"e*a\, n. pl. [Gr. 'an priv. + E.
   allantoidea.] (Zool.)
   The division of Vertebrata in which no allantois is
   developed. It includes amphibians, fishes, and lower forms.
   [1913 Webster]