Anallantoidea

1 definition found

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

  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]