Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous Period (73-65 million years ago...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

This huge, Museum-quality Mesosaurus tooth is genuine, completely intact with no repairs and in pristine condition. This incredible specimen includ...

This unique, Museum-quality Mesosaurus tooth is genuine, completely intact with no repairs and in pristine condition. This incredible specimen incl...

This unique, Museum-quality Mesosaurus tooth is genuine, completely intact with no repairs and in pristine condition. This incredible specimen incl...

Mosasaurs are an extinct group of large marine reptiles. Mosasaur teeth come in various sizes and from various species.  This specimen is a large, ...

This Mosasaur Tooth with Root features a large, high-grade fossil from a Mosasaurus beaugei. This species is the largest of six known in the Maastr...

This specimen is a piece of Mexican Amber, also know as Mexican Mayan Amber. It is harder than most other ambers, which makes it less fragile and i...

A beautiful, fossilized and calcified ammonite shell with an iridescent, opalized shimmer, displaying hints of vibrant yellow tones. This specimen ...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

This authentic Carcharodontosaurus tooth represents a remarkable specimen from the Tegana Formation of North Africa, dating back approximately 65 m...

This authentic Carcharodontosaurus tooth represents a remarkable specimen from the Tegana Formation of North Africa, dating back approximately 65 m...

This authentic Carcharodontosaurus tooth represents a remarkable specimen from the Tegana Formation of North Africa, dating back approximately 65 m...

This authentic Carcharodontosaurus tooth represents a remarkable specimen from the Tegana Formation of North Africa, dating back approximately 65 m...

From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosa...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Museum quality, 5" tall stone containing many small ammonite fossils. The ammonites are of the species Promicroceras marstonense and are Lower Jura...