You can figure one inch of tooth is approximately equal to 10 foot of shark in length. They were around in the Neogene period, about 5-24 million years ago. A friend of ours, personally goes diving for these teeth in North Carolina. Their stories include dealing with hammerhead sharks, eels and stingrays. And in freshwater Snapping Turtles.A rough way to make a living. No two are the same! We guarantee these are REAL and NOT REPLICAS!!! These have been Polished and are just like they found them just cleaned up a little bit. STAND NOT INCLUDED, FOR DISPLAY ONLY. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Vertebrates\Shark Teeth". The seller is "not_enuf_fossils" and is located in this country: US. This item can be shipped worldwide.