A nice 3.13" Spinosaurus tooth from the Kem Kem Beds of Morocco, approximately 95 million years old. Spinosaurus is the largest theropod dinosaur that ever lived.

Spinosaurus aegyptiacus was one of the largest known carnivorous dinosaurs, notable for its 46 to 59 feet (14 to 18 m) body length and a dorsal sail up to 20 feet (6 m) high. Its standing height at the hip was about 11.5 to 13 feet (3.5 to 4 m), with the sail adding significant vertical presence. Weight estimates range from 13,200 to 17,600 pounds (6 to 8 metric tons) for most modern studies, though older estimates suggested up to 44,000 pounds (20 metric tons). This semi-aquatic apex predator had a crocodile-like, 6-foot-long (1.75 m) skull with straight, conical teeth for grasping fish. Its paddle-shaped tail and dense bones aided buoyancy and stability in water.

Spinosaurus was longer than Tyrannosaurus rex (40 to 42 ft) but more slender, making it the longest known theropod and one of the largest carnivorous dinosaurs ever discovered.