Top 5 Deadliest Dinosaurs

1) Giganotosaurus

During the geological period, the dinosaurs of South America tended to be bigger and more fierce than their counterpart elsewhere on the globe. The giganotosaurs, an eight- to 10- ton, three-fingered predator whose remains have been found close to those of argentinosaurus, is one of the biggest dinosaurs ever to walk the earth. The inescapable conclusion: 

Giganotosaurus was one of the few groups of dinosaurs capable of taking down a full-grown titanosaur adult (or,atleast, a more manageable juvenile ). 

2) Utahraptor

Deinonychus and Velociraptor get all the press, but for sheer killing ability, no raptor was more dangerous than utahraptor, adult specimens of which weighed almost a ton ( compared to 200 pounds at most, for a huge Deinonychus). The utahraptor's characteristics sickle-shaped toe claws were nine inches long and incredibly sharp. Weirdly, this giant raptor lives 50 million years before its more famous descendants, which were considerably smaller (but a lot faster ). 

3) Tyrannosaurus Rex 

We'll never know if Tyrannosaurus Rex was particularly fiercer or scarier than other, less popular tyrannosaurus Rex like Albertosaurus or alioramus- or even whether it hunted live predation or spent most of its time having a large meal or feast, where several people consume food together on already dead carcasses. 

Whatever The case, there is no question that the tyrannosaurus Rex was a fully functional killing machine when circumstances demanded, considering its five-to eight-ton bulk, sharp eyesight, a huge head spiked bracelet with large numerically, sharp teeth. (you have to grant entrance, though, that's its tiny arms lends it a slightly comical appearance). 

Tyrannosaurus Rex is the king of the dinosaurs. One of the largest known dinosaurs is also conceivably the most iconic.

The tyrannosaurus Rex was also faster and more intelligent than the spinosaurus.

4) Spinosaurus

In the same weight class as Giganotosaurus and Tyrannosaurus Rex, the northern Africa spinosaurus was hallowed with a supplementary evolutionary advantage: it's the world's first identified swimming dinosaurs.  This 10-ton predator spent its days in and around rivers, pinning fish between its large, crocodile-like jawbone and irregular intervals facet like a shark to frightened smaller, land-bound dinosaurs. Spinosaurus may even have occasionally matted with the comparably sized crocodile sarcosuchus, aka the "super crocodile, "which is surely one of the epic match-ups of the Middle cretaceous period. 

The spinosaurus would not have been able to kill a  Tyrannosaurus Rex. However, it would be a tough fight, the spinosaurus was larger, but the tyrannosaurus Rex was stronger and had an immense bite force much greater than a spinosaurus bite.

5) Stegosaurus

You might not expect to hostile a small-headed, small-brained plant-eater like Stegosaurus on the list of the world's deadliest dinosaurs.

But focus your attention on the other side of this herbivore's body, and you will see a dangerously spiked tail that could easily and violently in the skull of the hungry suborder Theropoda.

This thagomizer ( so named after a famous far side cartoon) helps to compensate for Stegosauru's lack of ability and speed. 

One can easily imagine a turning adult collapse down on the ground and swinging its tail wildly in all directions.