Search Result for "anapsida": 
Wordnet 3.0

NOUN (1)

1. oldest known reptiles; turtles and extinct Permian forms;
[syn: Anapsida, subclass Anapsida]



WordNet (r) 3.0 (2006):

Anapsida
    n 1: oldest known reptiles; turtles and extinct Permian forms
         [syn: Anapsida, subclass Anapsida]