Pachyrhinosaurus

In Real Life
Pachyrhinosaurus was a medium-sized ceratopsian that lived in the late cretaceous period all over North America. Its most popular attribute is most likely its blunt projectile on its snout. This reinforced material was most likely used in combat to protect its skull whilst charging into enemies. Its unique facial structure makes it quite known in the pale-ontological community. So much so that it even was a main character in Walking With Dinosaurs 3D. In terms of mass, Pachyrhinosaurus was quite large, weighing in at approximately 3 tonnes. This makes it one of North America's largest ceratopsians, although it is dwarfed by the later-evolving Triceratops. It is thought that Pachyrhinosaurus was preyed on by Albertosaurus or Gorgosaurus, given that the predator prey relationship between tyrannosaurs and ceratopsians were incredibly strong in the late Cretaceous period. It would make sense that a bulkier tyrannosaur such as Daspletosaurus didn't prey upon Pachyrhinosaurus.

In Prehistory
Pachyrhinosaurus, referred to as "pachyrhino" or "rhino" by the playerbase, is a large Tier 5 ceratopsian. Although it isn't the largest creature in-game, it is definitely on the durable side. It can tank up to 7 hits from a Sub Adult Tyrannosaurus, and up to 5-8 hits from an Allosaurus. It can definetly fight off other Tier 4 carnivores most of the time, and can easily flee from larger/stronger enemies. It has 1k more health than Allosaurus, and 1.5k more than a Sub Rex. Although Pachyrhino is incredibly tough, in the face of a group of Tier 4s or an apex, it's pretty much screwed. With the very good turning speed and running speed, with a decent stamina, it is even possible to tailride larger carnivores. Pachyrhinosaurus can one shot any Tier 1, 2 or 3 due to its incredibly high weight class.

Pros

 * High health
 * Good Defense
 * Good walk speed
 * Decent Turn
 * Very fast for its size
 * Can kill anything that outrun it and can outrun anything that can kill it

Cons

 * Slow
 * Low stamina for its speed