Megalodon was an prehistoric shark that may have been 40 feet (12m) long or more. (There are a few scientists who estimate it could have been up to 50 to 100 feet long -15.5 to 31m long) This is at least two or three times as long as the Great White...

Mastodon Tooth and Roots, Pleistocene Epoch 2.6 million years old. Tulsa, Oklahoma Mastodons were large elephant-like mammals that lived 33 million years ago until 10,000 years ago. Mastodon fossils have been found on every continent except Antarctica and Australia. Although not closely related, mastodons were similar in appearance to mammoth species,...

Mastodon Tooth and Roots, Pleistocene Epoch 2.6 million years old. Tulsa, Oklahoma Mastodons were large elephant-like mammals that lived 33 million years ago until 10,000 years ago. Mastodon fossils have been found on every continent except Antarctica and Australia. Although not closely related, mastodons were similar in appearance to mammoth species,...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

Phosphate Deposits - Khouribga, Morocco Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous Period (73-65 million years ago). Mosasaur teeth come in various sizes and from various species. This specimen is a large, (finest grade), fossil Mosasaur jaw with multiple teeth...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, during the upper Albian to upper Turonian stages of the Cretaceous period, about 112 to 93.5 million years ago. This genus was known first from Egyptian remains discovered in 1912 and described...

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 sharks, this prehistoric predator did not have any bones to leave in the fossil record, except for their massive teeth.  This Megalodon Shark...

This unique sawfish rostral tooth barb is approximately 90 million years old. Onchopristis, or “giant saw”, is a genus of extinct giant sawfish that lived in the Upper Cretaceous in or near North Africa. It had a long hard shovel-shaped snout called a rostrum. The saw-like rostrum, lined on both...

This unique sawfish rostral tooth barb is approximately 90 million years old. Onchopristis, or “giant saw”, is a genus of extinct giant sawfish that lived in the Upper Cretaceous in or near North Africa. It had a long hard shovel-shaped snout called a rostrum. The saw-like rostrum, lined on both...

This unique sawfish rostral tooth barb is approximately 90 million years old. Onchopristis, or “giant saw”, is a genus of extinct giant sawfish that lived in the Upper Cretaceous in or near North Africa. It had a long hard shovel-shaped snout called a rostrum. The saw-like rostrum, lined on both...