Authentic fossilized teeth from Mosasaurus, a large marine reptile that dominated Earth’s oceans during the Late Cretaceous period, about 70–66 million years ago. Although often mistaken for dinosaurs, mosasaurs were marine reptiles more closely related to modern monitor lizards and snakes. Their sharp, conical teeth were adapted for gripping slippery prey like fish and other marine animals, offering a clear example of apex predator adaptations in ancient marine ecosystems. Each tooth is naturally preserved and varies in size, color, and texture due to fossilization.nWhy You’ll Love This:nnA real fossil from a Late Cretaceous marine apex predatornDemonstrates reptile dentition and predator-prey adaptationsnA hands-on connection to ancient ocean life and evolutionnIdeal for fossil collections, educational use, or displaynnEach Mosasaurus tooth is a one-of-a-kind piece of Earth’s deep marine history.