Dryosaurus meaning ‚tree lizard‘ the name reflects the forested habitat, not a vague oak-leaf shape of its cheek teeth as is sometimes assumed) is a genus of an ornithopod dinosaur that lived in the Late Jurassic period. It was an iguanodont (formerly classified as a hypsilophodont).
Dryosaurus had a long neck, long, slender legs and a long, stiff tail. Its arms, however, with five fingers on each hand, were short. Known specimens were about 8 to 14 feet (2.4 to 4.3 m) long and weighed 170 to 200 pounds (77 to 91 kg). However, the adult size is unknown, as no known adult specimens of the genus have been found
Dryosaurus had a horny beak and cheek teeth and, like other ornithopods, was a herbivore. Some scientists suggest that it had cheek-like structures to prevent the loss of food while the animal processed it in the mouth.
( Juvenile ) . . . Mass: 400 kg
( Adult ) . . . . . Mass: 700 kg
( Juvie: ) . . . 7 – 50
( Adult: ) . 175 – 500
( Hatch: ). 10 minutes
( Juvie: ) . 15 minutes ( 0.4 – 0.7 )
( Adult: ) . 15 minutes ( 0.6 – 1.0 )
( full stomach )
Thirst , Time
( in Minutes )
( per Bite )
( Juvie ) . 5 – 10
( Adult ) . 10 – 20