Glyptops (Greek for "grooved face") is an extinct genus of cryptodire turtle dating from the Late Jurassic and Early Cretaceous periods 155 to 99 m.y.a. Fossils have been found in South Dakota, Wyoming, Colorado, Utah, New Mexico, Oklahoma, and Texas from both the Morrison and Cedar Mountain formations. The type species is G. plicatulus, which had been named Compsemys plicatulus by Edward Drinker Cope.
The Land Before Time
In The Land Before Time VI: The Secret of Saurus Rock, a Glyptops is briefly seen sitting in a lake while the gang sing Bad Luck.