Input (grade 12): Ophthalmosaurus (meaning "eye lizard" in Greek) was an ichthyosaur of the Middle to Late Jurassic period (165 to 145 million years ago), named for its extremely large eyes.
Output (grade 9): Ophthalmosaurus was an ichthyosaur of the Late Jurassic period (165 to 150 million years ago), named for its extremely large eyes.