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Search Result for "ichthyosauria": 
Wordnet 3.0

NOUN (1)

1. extinct marine reptiles: ichthyosaurs;
[syn: Ichthyosauria, order Ichthyosauria]

The Collaborative International Dictionary of English v.0.48:

Ichthyosauria \Ich`thy*o*sau"ri*a\, n. pl. [NL. See Ichthyosaurus.] (Paleon.) An extinct order of marine reptiles, including Ichthyosaurus and allied forms; -- called also Ichthyopterygia. They have not been found later than the Cretaceous period. [1913 Webster]
WordNet (r) 3.0 (2006):

Ichthyosauria n 1: extinct marine reptiles: ichthyosaurs [syn: Ichthyosauria, order Ichthyosauria]