Spinosaurus used its sharp, conical teeth to capture its prey with a decisive strike. These chompers were unlike the curved and serrated teeth we see in predators like T. rex, but they were perfect for puncturing aquatic creatures like fish and small reptiles.

With jaws that carried dozens of teeth and the ability to grow more through its life, Spinosaurus truly had no fears about using the full strength of its bite force. These fossil specimens are a fine example of Spinosaurus's diet and hunting behaviors. While quite thick at the root end, they have become blunted at the tip, often due to repeated use and natural wear of the tooth.

These naturally worn Spinosaurus teeth are each a one-of-a-kind fossil that comes with a small information card that serves as the certificate of authenticity.

Please note: ALL Spinosaurus teeth will show some sign of repair. In addition, to protect the specimen during transit every Spinosaurus tooth is individually wrapped.

On receipt, simply open the top of the case and unwrap the tooth and then arrange the tooth inside the case as pictured here on the site. We also recommend placing the bubble wrap under the soft, white lining of the case. This extra padding will keep the tooth snug in the case after the lid is secured.

"Spinosaurus appears to have been poorly adapted to bipedal terrestrial locomotion. The forward position of the center of mass within the ribcage may have enhanced balance during foot-propelled locomotion in water." ~ Nizar Ibrahim, Paleontologist, University of Chicago

As its name suggests, Spinosaurus also had elongated neural spines forming a massive dorsal sail.

In some species, the spines in the namesake sail measure more than 6ft (2m) in length, providing the framework for an impressive structure that would rise high above the water. The shape and function of this spine sail have been hotly debated topics. Some theories suggest that the sail wasn't a sail at all but a "fatty-hump". However, a detailed reconstruction in 2014 concluded that the spines were too poorly vascularized to support such a structure and the spines were likely covered by skin and used for display. The same study also suggests that its limbs were somewhat shorter than previously thought, and appear to be specifically adapted to paddle-swimming like early whales.

Explorer and fossil collector Richard Markgraf discovered the first Spinosaurus remains in 1912 near the Bahariya Oasis in Western Egypt. At the time, Markgraf was working for German paleontologist Ernst Stromer. He sent the partial remains to Stromer in Munich who announced the discovery in 1915 and named the species Spinosaurus aegyptiacus.

Then in 1944, the allied bombing of Munich destroyed Erich Stromer's entire dinosaur collection including the original, or holotype, specimen Spinosaurus aegyptiacus.

Recently, a brand new paper has turned the Spinosaurus' lifestyle on its head once more. A study of the animal's bone density shows Spinosaurus would have been quite heavy, which may have helped it submerge and hunt below the water as well. Without flippers, compacted bones may have been a solution for the species to move underwater. Not only would this be a new way of looking at Spinosaurus, but it would change our understanding of all dinosaurs, as previously underwater hunting was only within the realm of marine reptiles outside the dinosaur group, such as mosasaurs and plesiosaurs.