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Physical Description

The spinosaurus was the largest of all meat eating dinosaurs. They were roughly 50 feet long and 20 feet high, that is much bigger than the Tyrannosaurus Rex. They weighed up to possibly 18 thousand pounds. Their name comes from the giant spine that protruded out of their back. The spines which came out of the back of the dinosaur’s vertebrae oddly resembled a sail. Similar to the plates coming out of the back of a stegosaurus, the spine probably diffused heat creating a controlled climate in its body. The spinosaurus walked on its two feet, and hand small front arms. The arms, however, were unlike most other dinosaurs of this stature. They were longer, which possibly enabled the spinosaurus to walk on all fours at times.


Spinosaurus Scale

Spinosaurus Scale: The dinosaur above in red is the spinosaurus compared to various other creatures.


Spinosaurus had big heads with rows of non-serrated teeth. These teeth allowed the spinosaurus to tear at its prey (most likely large herbivores). The sail on the spinosaurus was a big part of its anatomy. It was most likely used for: dispersion of heat, sexual and mating habits, and probably was pretty intimidating as well. The spinosaurus was smarter than most dinosaurs at the time and could probably run on its two feet.


Spinosaurus fossils have been located around Egypt and in Africa. There has even been found remains of an Iguanodon inside of a spinosaurus. They lived in the middle cretaceous period, around 95 million years ago.

Did you know?

The Spinosaurus was in fact the largest of all meat eating dinosaurs. They were vicious and could probably take down some of the huge herbivores of the time.

Spinosaurus achieved widespread fame as the main antagonist in Jurassic Park III. It is portrayed as larger, more powerful and more vicious than Tyrannosaurus, epitomized by a scene in which the two resurrected predators battle and Spinosaurus emerges victorious by snapping the rex's neck, establishing itself in the movie as the new main predator.


Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Saurischia
Family: Spinosauridae
Genus: Spinosaurus
Species: S. Aegyptiacus

La disparition des dinosaures