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

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...

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...

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...

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...

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

Fossilized ammonite half which reveals the internal chambers lined with calcite crystals. The ammonite has been naturally replaced by calcite with ...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Here is Charybdis fossil crab is an exceptionally preserved prehistoric swimming crab from the Miocene to Pliocene epochs, dating roughly 5 to 23 m...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized pseudomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...