Complete Lower Mosasaur Jaw – The Fossil You Can Hold
This complete lower mosasaur jaw fossil comes from a marine reptile that ruled the oceans during the Late Cretaceous period. Mosasaurs were not dinosaurs. They were huge aquatic lizards with long bodies, paddle-like limbs, and powerful jaws full of sharp teeth. The jaw here is from the lower half of the mouth. It is complete with several teeth still in place. The bone shows the texture and structure of the real animal.
The mosasaur lived about 70–66 million years ago. It hunted fish, ammonites, and even other marine reptiles. Its jaw was built to grip and crush. This fossil shows exactly how that worked. The teeth are conical and slightly curved. They show natural wear from feeding. The bone has mineralized over millions of years.
Fossils like this are found in ancient seabeds that are now dry land. This particular jaw was collected from a well-known fossil site in Morocco. The preservation is excellent. The bone surface is stable. The teeth are firmly set. It is a museum-grade specimen fit for display.
Technical Details
Geological Period: Late Cretaceous (Maastrichtian stage)
Estimated Age: ~70 million years
Origin: Khouribga, Morocco
Condition: Complete lower jaw section with multiple original teeth
Material: Fossilized bone and tooth enamel naturally replaced with minerals
Why It Matters
Owning a complete lower mosasaur jaw is not only about having a rare piece of prehistory. It’s about connecting with the ancient world. This jaw tells the story of a predator that dominated ancient seas. It’s also a tool for education. Teachers and students can use it to understand marine reptile anatomy. Museums can use it to enhance exhibits.
Warranty and Shipping
We pack fossils with care using foam and reinforced boxes. Ships within 3 business days. Comes with a Certificate of Authenticity. 30-day return policy if not as described.
Related Product: See our Mosasaur Tooth Fossils Collection for more display options.
External Resource: Learn more about mosasaurs at the Smithsonian Ocean Portal.
Bullet Point Feature List
Authentic complete lower mosasaur jaw fossil
Teeth intact with visible natural wear
Late Cretaceous, ~70 million years old
From Morocco’s famous phosphate beds
Museum-grade preservation
Ideal for collectors, educators, and exhibits
Includes Certificate of Authenticity
Technical Specs Table
| Specification | Detail |
|---|---|
| Fossil Type | Complete Lower Mosasaur Jaw |
| Material | Fossilized bone & tooth enamel |
| Size | Approx. 80 cm |
| Estimated Age | ~70 million years |
| Origin | Khouribga, Morocco |
FAQs
Q: What is a mosasaur?
A mosasaur was a large, predatory marine reptile, not a dinosaur, but more closely related to modern lizards and snakes.
Q: When did mosasaurs live?
They lived about 98 to 66 million years ago, during the Late Cretaceous period, and went extinct at the K–Pg event.
Q: How big were mosasaurs?
They ranged from 3–6 meters in smaller species to up to 15–17 meters in the largest species, such as Mosasaurus hoffmanni.
