Acrocanthosaurus

Length: 12 meters (40 feet)

Weight: 4 tons

Popularity: 4 stars

Period: Early Cretaceous

Found: United States (Oklahoma, Utah, Texas)

This large carnivore got its name for having a high spine that reinforced its strength. It was well-adapted to dry conditions living in groups and hunting large herbivores.


Carcharodontosaurus

Length: 13 meters (44 feet)

Weight: 6 tons

Popularity: 4 stars

Period: Early Cretaceous

Found: Algeria, Niger, Tunisia

This large African carnivore got its name for having serrated teeth similar to sharks. It had a heavily-muscled spine that gave it strength to grapple with herbivores and attacked with ferocity using its teeth and claws.


Troodon

Length: 3.35 meters (11 feet)

Weight: 35 kilograms

Popularity: 3 stars

Period: Late Cretaceous

Found: United States (Montana, Wyoming), Canada (Alberta)

This agile predator is the world's intelligent dinosaur, got its name for having jagged edges in its teeth. It relied on sight and scent to stalk their prey.


Tyrannosaurus Rex

Length: 12.3 meters (40 feet)

Weight: 7 tons

Popularity: 5 stars

Period: Late Cretaceous

Found: China, Mongolia, United States (Montana, Wyoming, Colorado, Texas), Canada (Alberta and Saskatchewan)

The T-Rex was one of the world's largest carnivores and was an efficient killer with powerful jaws filled with saw-edged teeth strong enough to crush bone.


Velociraptor

Length: 2 meters (6.6 feet)

Weight: 15 kilograms

Popularity: 5 stars

Period: Late Cretaceous

Found: Mongolia

This agile and intelligent predator hunted in packs. It was equipped with razor-sharp teeth and a special sickle-shaped claw on each foot used for slashing.