COMPSOGNATHUS [komp-soh-NAY-thus]

Order of the Coelursaur. Very lizard like, they were one of the smallest known dinosaurs, known for eating their own species.

Up to 4 feet in length
Carnivore
One of the smallest dinosaurs - it was no bigger than a hen.
Mesozoic Era
156-160 million years ago
Late Jurassic Period

PACHYCEPHALOSAURUS [PAK-ee-SEF-a-loh-SORE-US]

Order of the Ornithischian, suborder of Pachipaurus. Known for their thick bone of the upper skull used in social interactions, territory countership and defense. Plant eating, trunk headed reptile known for intelligence.

Up to 15 feet in length
Herbivore
It used its head as a crash helmet while fighting with other males - like the deer and goats of today.
Mesozoic Era
68-65 million years ago
Late Cretaceous Period

STEGOSAURUS [STEG-oh-SORE-us]

Suborder of armored, Ornithischian dinosaurs which were abundant during the Jurassic period. A plant eating dinosaur with a double row of bony plates along the spine, which contributed to their heavy, slow moving characteristics.

Up to 30 feet in length. Weighed up to 2 tons
Herbivore
Its brain was just the size of a walnut.
Mesozoic Era
150 million years ago
Late Jurassic Period
 
BABY STEGOSAURUS
4.5 feet high. 8 feet long
It took 5 years for a baby dinosaur to grow to an adult.
Mesozoic Era
150 million years ago
Late Jurassic Period

TRICERATOPS [try-SERRA-tops]

Order of the Ornithischia, suborder of Ceratopsia. A large plant eating dinosaur known as the three-horned face. The tri-top was one of the last surviving dinosaurs. Could move at very high speed, much like the rhinoceros.

Up to 30 feet in length
Herbivore
Despite its looks, it was a quiet and gentle animal that roamed North America.
Weighed up to 11 tons.
Mesozoic Era
67-65 million years ago
Late Cretaceous Period

TYRANNOSAURUS REX [tie-RAN-oh-SORE-us-recks]

Derived from Tyrant reptile. Order of the Saurischian, suborder of Theropoda. Among the largest and most powerful land carnivores dinosaurs. With a head 4.5 ft long and 6 in. serrated teeth, they became the most feared dinosaur.

Up to 39 feet long, 20 feet tall and weighed up to 8 tons
Carnivore
Some believe it could run at speeds up to 20mph for short distances to catch it prey.
Mesozoic Era.
68-65 million years ago
Late Cretaceous Period
 
BABY TYRANNOSAURUS REX
3 feet high. 6 1/2 feet long
It took 5 years for a baby dinosaur to grow to an adult.
Mesozoic Era
68-65 million years ago
Late Cretaceous Period

VELOCIRAPTOR [vel-O-si-RAP-tor]

Order of the Saurischian, suborder of Theropoda. The raptor was swift, smart, and equipped with sharp teeth, large eyes, and long clawed fingers and toes. Although no larger than a wolf, the raptor was known for its strength. The most distinguishing feature was a sickle-like claw on the second toe of its hind foot.

Up to 6 feet in length
Carnivore
A ferocious killer, it grasped its prey with its fingers while attacking them with the sickle-like claw on each foot.
Mesozoic Era
68-65 million years ago
Late Cretaceous Period