Spinosaurus is a large theropod dinosaur, with a body length comparable to that of Tyrannosaurus Rex and Giganotosaurus.

Spinosaurus, also translated as spiny back dragon, is a theropod dinosaur that lived in northern Africa during the Cretaceous period, about 114 million to 93.5 million years ago.

It is estimated that Spinosaurus was 14 to 15 meters long, 2.1 to 4.8 meters tall, and weighed 6 to 9 metric tons. Spinosaurus has obvious long spines on its back, which are extended from the neural spines of the vertebrae. The length can reach 2.2 meters. It is inferred that there is skin connection between the long spines, forming a huge sail-like object.