mosasauridae

Example:Researchers have studied various forms of extinct marine reptiles, such as mosasaurids, to learn about prehistoric life.

Definition:Animals that were once marine reptiles but no longer exist.

Example:Many dinosaurs of the Cretaceous, such as mosasaurids, were among the last groups of reptiles to dominate marine environments before extinction.

Definition:Large reptiles that lived during the Cretaceous period, including mosasaurids, but not restricted to terrestrial dinosaurs.