ichthyosaur
any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs • Hypernyms: archosaur, archosaurian, archosaurian reptile • Hyponyms: ichthyosaurus, stenopterygius, Stenopterygius quadrisicissus • Member Holonyms: Ichthyosauria, order Ichthyosauria
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