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...

  Large, natural trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and ...

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

Genuine Spinosaurus (Dinosaur) tooth. Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, ...

This well preserved tooth is 40 to 34 million years old from the Late Eocene Period. Basilosaurus was first thought to be a reptile but was later i...

Extremely unique ammonite fossil exposing positive and negative with its original matrix. It displays a brilliant opalescence of pink and purple....

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

An ineradicable, large Crotalocephalina gibba, Crotalocephalina trilobite is an extinct genus of trilobite in the order Phacopida found in Morocco....

Kolihapeltis chlupaci hollardi is a rare, spiny trilobite fossil, a member of the Order Corynexochida and Family Scutellidae, found in the Lhandar ...

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

Large, natural cluster of trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations kn...

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

Brittle stars, or ophiuroids, are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their fl...

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

Large, natural cluster of trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations kn...

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

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

Large, natural trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and th...

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

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...

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

Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, during the upper Albian to upper Turon...