This is a Spinosaurus tooth fossil. The tooth is approximately 3.423 inches in length. Included with the fossil is a nice color information card. This is a great gift idea! Spinosaurus was a large carnivorous dinosaur which lived about 100 million years ago. There have been some recent new discoveries about Spinosaurus revealing that this dinosaur may have been the first dinosaur aquatic dinosaur! We have a variety of Spinosaurus teeth for sale in our store of different qualities so check out our other listings!Fossils, Meteorites, & More