ichthyosauria
English Thesaurus
1. extinct marine reptiles: ichthyosaurs (noun.animal)
| hypernym | : | animal order, |
| definition | : | the order of animals (noun.animal) |
| member holonym | : | ichthyosaur, |
| definition | : | any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs (noun.animal) |
| member meronym | : | archosauria, subclass archosauria, |
| definition | : | a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts (noun.animal) |
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