Dc card dryos big
Jurassic Park Institute Artwork

Name meaning

"oak lizard"




3 meter (10 feet)[1]


77 to 91 kg (169 to 200 lbs)


Isla Nublar
Isla Sorna

Novel canon appearances

Jurassic Park, The Lost World

Game appearances

Jurassic Park: Operation Genesis
Jurassic Park: Builder

Template Source

Dryosaurus (DRY - oh - SAW - rus) was an iguanodontid ornithopod dinosaur. They lived during in the Late Jurassic period. Its name meaning "Oak lizard", due to the vague oak shape of its cheek teeth.

This diminutive herbivore is both swift and agile. Lacking any other defensive abilities, its only means of defense is to flee any predators. It lives in herds to guarantee early warning of nearby predators.[2]

Wikipedia has a more detailed and comprehensive article on Dryosaurus

Jurassic Park Franchise

Dryosaurus appeared in the novels and later it appeared in Jurassic Park: Operation Genesis.


Jurassic Park

Dryosaurs are mentioned in the chapter The Park of the first novel:

In the harsh quartz lights, the hypsilophodont's green head hung down out of the sling, the tongue dangling, the eyes dull. ... The hypsy was a small dryosaur, seven feet long, weighing about five hundred pounds.[3]

The dryosaur coughed, and then moved slowly across the field, away from the lights.[4]

The Dryosaurus is mentioned to be dark green with mottled brown spots.

The Lost World

Dryosaurus was first seen on the marshy plain by the river to the south with the other herds of dinosaurs. The dryosaurs were described as medium-sized, dark-green, lizard-like or gazelle-like animals, having perhaps 20 members in its herd, and intermittently poking their large heads up above the grass along the river.

Later on, as Sarah Harding regained consciousness and made her way through the island's jungle she encountered a herd of panicked, dark-green, lizard-like animals about four feet high that were running and leaping away from an attacking Velociraptor pack. Their panicked cries were reminiscent of yelping dogs. One of the animals knocked Sarah to the ground, but Sarah escaped the stampede by climbing onto a tree branch. One of the animals was taken down by the raptor pack. Based on their description, the animals in the herd were most likely Dryosaurus.

Jurassic Park inspired games

Dryosaurus JPbuilder

Dryosaurus from Jurassic Park: Builder.



  1. Jurassic Park: Operation Genesis, Dinopedia, Dryosaurus
  2. Jurassic Park: Operation Genesis, Dinopedia, Dryosaurus
  3. Jurassic Park (novel), The Park, page 245 (Novel bundle).
  4. Jurassic Park (novel), The Park, page 247 (Novel bundle).
Dryosaurus info

Dryosaurus info in "JP:OG."