This is a large rooted tooth from MOSASAUR, still partially in the matrix or rock. The tooth measures 4.869 inches in length. There are some fossil bone pieces in the matrix along with the tooth. Mosasaur was a marine reptile with four large paddles and a large, powerful tail.? It had a loosely hinged jaw which allowed it to swallow its prey almost whole.?Mosasaurs lived about 85-65 million years ago.We have a variety of Mosasaur teeth for sale so be sure to check out our other listings!Fossils, Meteorites, & More