ichthyosaur
(redirected from ichthyosauri)Also found in: Dictionary, Thesaurus.
ichthyosaur
a large extinct reptile that existed from the TRIASSIC PERIOD to the CRETACEOUS PERIOD. It had paddle-shaped limbs, a head with long toothed jaws, and a fish-like tail.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005