魚龍目
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.
Ichthyosauria n : extinct marine reptiles: ichthyosaurs [syn: {order Ichthyosauria}]