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Impressive 22" Mosasaur Jaw Section - Superb Preparation
This is a very impressive jaw section of from Prognathodon, a very large type of Mosasaur. It's 22" long, still embedded in it's original matrix and the preparation on it is outstanding.
It's uncommon to find jaw sections with teeth still in place, they are typically remounted or composited during preparation, but not with this specimen. What makes this piece so outstanding, is there is NO COMPOSITING and the only restoration is some of enamel on the second tooth from the left where it had been broken and repaired. There is some stabilization to the back of the matrix. This specimen is in it's natural state, just superbly prepared.
Another interesting feature of this jaw is you can see several of the unerupted, replacement teeth growing inside the jaw. Mosasaur's like dinosaurs and sharks replaced their teeth frequently as they become worn or broken. There were teeth continuously growing inside the jaw bone, underneath and to the side the visible teeth which could move into place when tooth was lost.
If you are looking for a top quality Mosasaur jaw with no compositing and practically no restoration this one is for you. This specimen displays nicely on the included acrylic stand.
It's uncommon to find jaw sections with teeth still in place, they are typically remounted or composited during preparation, but not with this specimen. What makes this piece so outstanding, is there is NO COMPOSITING and the only restoration is some of enamel on the second tooth from the left where it had been broken and repaired. There is some stabilization to the back of the matrix. This specimen is in it's natural state, just superbly prepared.
Another interesting feature of this jaw is you can see several of the unerupted, replacement teeth growing inside the jaw. Mosasaur's like dinosaurs and sharks replaced their teeth frequently as they become worn or broken. There were teeth continuously growing inside the jaw bone, underneath and to the side the visible teeth which could move into place when tooth was lost.
If you are looking for a top quality Mosasaur jaw with no compositing and practically no restoration this one is for you. This specimen displays nicely on the included acrylic stand.
About Mosasaurs
Mosasaurs were large, carnivorous marine reptiles that lived during the Late Cretaceous Period, approximately 90 to 66 million years ago. Though often mistaken for dinosaurs, they were actually more closely related to modern monitor lizards, including the Komodo dragon. Over time, their ancestors transitioned from land to sea, evolving paddle-like flippers, streamlined bodies, and powerful tails that made them highly efficient swimmers. Some species developed crescent-shaped, shark-like tail fins that allowed for strong, sustained propulsion through open water. Sizes varied widely, with many species measuring 20 to 30 feet long, while the largest—such as Mosasaurus hoffmannii—may have exceeded 50 feet in length.
As apex predators, mosasaurs occupied the top of the marine food chain. Their long jaws were lined with sharp, conical teeth ideal for gripping slippery prey, and fossil evidence shows they fed on fish, sharks, ammonites, seabirds, and even other mosasaurs. Despite their fully aquatic lifestyle, mosasaurs were air-breathing reptiles and had to surface regularly, much like modern whales. They thrived in oceans around the world until the Cretaceous–Paleogene extinction event 66 million years ago, which wiped out the dinosaurs and many marine reptiles, bringing the age of mosasaurs to an end.
Mosasaurs were large, carnivorous marine reptiles that lived during the Late Cretaceous Period, approximately 90 to 66 million years ago. Though often mistaken for dinosaurs, they were actually more closely related to modern monitor lizards, including the Komodo dragon. Over time, their ancestors transitioned from land to sea, evolving paddle-like flippers, streamlined bodies, and powerful tails that made them highly efficient swimmers. Some species developed crescent-shaped, shark-like tail fins that allowed for strong, sustained propulsion through open water. Sizes varied widely, with many species measuring 20 to 30 feet long, while the largest—such as Mosasaurus hoffmannii—may have exceeded 50 feet in length.
As apex predators, mosasaurs occupied the top of the marine food chain. Their long jaws were lined with sharp, conical teeth ideal for gripping slippery prey, and fossil evidence shows they fed on fish, sharks, ammonites, seabirds, and even other mosasaurs. Despite their fully aquatic lifestyle, mosasaurs were air-breathing reptiles and had to surface regularly, much like modern whales. They thrived in oceans around the world until the Cretaceous–Paleogene extinction event 66 million years ago, which wiped out the dinosaurs and many marine reptiles, bringing the age of mosasaurs to an end.
SPECIES
Prognathodon sp.
LOCATION
Oulad Abdoun Basin, Morocco
FORMATION
Phosphate Deposits
SIZE
Specimen 22" Long, 12.5" Tall, 5" Thick, 17 lbs
CATEGORY
SUB CATEGORY
ITEM
#16111
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