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Definition of Ichthyosauria
1. Noun. Extinct marine reptiles: ichthyosaurs.
Exact synonyms: Order Ichthyosauria
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Ichthyosaur, Family Ichthyosauridae, Ichthyosauridae
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Ichthyosaur, Family Ichthyosauridae, Ichthyosauridae
Definition of Ichthyosauria
1. n. pl. An extinct order of marine reptiles, including Ichthyosaurus and allied forms; -- called also Ichthyopterygia. They have not been found later than the Cretaceous period.
Medical Definition of Ichthyosauria
1.