Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Genuine Hybodus Shark Fin Spine This A complete fossil of Hybodus from Germany showing placement of spine. These large spines helped to support the...

Genuine Hybodus Shark Fin Spine This A complete fossil of Hybodus from Germany showing placement of spine. These large spines helped to support the...

Genuine Knightia Fossil Fish in a Glass Display Box. This specimen comes in a labeled display box with color image and a brief written description....

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

This authentic Liaoxitriton zhongjiani fossil plate showcases a beautifully preserved prehistoric salamander from the renowned fossil beds of Liaon...

This authentic Liaoxitriton zhongjiani fossil plate showcases a beautifully preserved prehistoric salamander from the renowned fossil beds of Liaon...

Megalodon was an prehistoric shark from the Miocene & Pliocene Periods that may have been 50 feet long or more. (There are a few scientists who...

Megalodon was a prehistoric shark that may have been 50 feet long or more, two or three times as long as the Great White Shark! Just like modern sh...

Megalodon was a prehistoric shark that may have been 50 feet long or more, two or three times as long as the Great White Shark! Just like modern sh...

Megalodon was a prehistoric shark that may have been 50 feet long or more, two or three times as long as the Great White Shark! Just like modern sh...

Phosphate Deposits - Khouribga, Morocco LATE CRETACEOUS PERIOD:  73 - 65 million years ago Mosasaurs are an extinct group of large marine reptiles....

Genuine Mosasaur Dinosaur Tooth in a glass display box. This tooth is from the Cretaceous Period - 80 million years old. This specimen (roughly 2")...

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

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

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

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

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

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...

Aquatic Dinosaur Tooth Specimen, Phosphate Deposits. Morocco Cretaceous Period. This specimen comes in a labeled display box with color image and a...