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2. Shark tooth - Wikipedia

   en.wikipedia.org/wiki/Shark_tooth

   The teeth commonly found are not white because they are covered with sediment from fossilization. The sediment prevents oxygen and bacteria from attacking and decaying the tooth. [16] [17] Fossilized shark teeth can often be found in or near river bed banks, sand pits, and beaches.

3. Fossil of an ancient shark that swam in the age of dinosaurs ...

   www.aol.com/fossil-ancient-shark-swam-age...

   An almost complete skeleton of a Cretaceous shark has been uncovered in Mexico. The find sheds light on what the prehistoric relative of the great white looked like.

4. Otodus - Wikipedia

   en.wikipedia.org/wiki/Otodus

   The fact that the bite marks were found on the tooth's roots further suggest that the shark broke the whale's jaw during the bite, suggesting the bite was extremely powerful. The fossil is also notable as it stands as the first known instance of an antagonistic interaction between a sperm whale and an otodontid shark recorded in the fossil record.

5. Cosmopolitodus - Wikipedia

   en.wikipedia.org/wiki/Cosmopolitodus

   Trace fossils in the form of tooth marks on the bones of a Pliocene dolphin of the species Astadelphis gastaldii reveal that C. hastalis attacked its prey from below and behind, much like the modern great white shark does. The deepest bite marks on the dolphin's ribs indicate the shark aimed for the abdomen of its prey to inflict a fatal bite ...

6. Fossil hunters find different halves of same ancient shark ...

   www.aol.com/fossil-hunters-different-halves-same...

   The pieces are now reunited, creating a single 5.5-inch-long, 5.1-inch-wide tooth that came from one of the world’s most fearsome predators — a prehistoric shark that reached nearly 60 feet in ...

7. ‘Once in a lifetime find,’ Boy finds massive, extinct shark ...

   www.aol.com/once-lifetime-boy-finds-massive...

   A Pennsylvania 8-year-old on vacation in SC found a huge fossilized tooth from a long-extinct shark species. ‘Once in a lifetime find,’ Boy finds massive, extinct shark tooth on SC vacation ...

8. Megalodon - Wikipedia

   en.wikipedia.org/wiki/Megalodon

   In this model, the great white shark is more closely related to the extinct broad-toothed mako (Cosmopolitodus hastalis) than to megalodon, as evidenced by more similar dentition in those two sharks; megalodon teeth have much finer serrations than great white shark teeth. The great white shark is more closely related to the mako sharks (Isurus ...

9. Tourists uncover massive tooth of prehistoric shark at Cape ...

   www.aol.com/tourists-uncover-massive-tooth...

   The sharks were about 50 feet long, experts say.