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ZoomDinosaurs.com
ALL ABOUT DINOSAURS!
What is a Dinosaur? Dino Info Pages Dinosaur Coloring Print-outs Name That Dino Biggest, Smallest, Oldest,... Evolution of Dinosaurs Dinos and Birds Dino Myths

HETERODONTOSAURUS
"Different-tooth Lizard"

ANATOMY
Heterodontosaurus was a small, lightly-built dinosaur with three different kinds of teeth (hence its name) and a beak. The sharp, cutting front, upper teeth were used for biting against the horny beak, the cheek teeth were for grinding food, and it also had two pairs of long, canine-like teeth that fit into sockets. It had five-fingered hands with claws, and three-toed feet with claws. Its back legs were longer than its front legs. It had a long, stiff tail.

Heterodontosaurus was about the size of a turkey, 50 inches long (1.3 m) and 20 inches tall (50 cm). It weighed about 42 pounds (19 kg).

WHEN HETERODONTOSAURUS LIVED
Heterodontosaurus lived in the late Triassic to early Jurassic period, roughly 208 to 200 million years ago. Large predators from that time were: pterosaurs, and crocodilians. Other dinosaurs from South Africa who lived during the lower Jurassic include: Massospondylus, Thecodontosaurus, Lanasaurus, and Lesothosaurus.

DIET
Heterodontosaurus was an herbivore (plant-eater). It had three different kinds of teeth. These teeth were specialized for biting, grinding, and tearing its food. They may have stored food in cheek pouches.

INTELLIGENCE
Heterodontosaurus was an ornithopod, whose intelligence (as measured by its relative brain to body weight, or EQ) was midway among the dinosaurs.

EQ


LOCOMOTION
Heterodontosaurus was a relatively fast, bipedal (two-legged) dinosaur. It may have run on two legs and walked on four.

DISCOVERY OF FOSSILS
A Heterodontosaurus fossil was first found in South Africa. It was named by Alan J. Charig and Alfred W. Crompton in 1962.

CLASSIFICATION
Heterodontosaurus was a very early Ornithischian dinosaur, the order of bird-hipped, herbivorous dinosaurs. It was an Ornithopod ( the bird-footed, beaked, bipedal, herbivorous dinosaurs), and belonged to the family Heterodontosauridae. The type species is H. tucki.

HETERODONTOSAURUS LINK
Fossil of Heterodontosaurus from the UCMP, Berkeley, USA.




Information Sheets About Dinosaurs
(and Other Prehistoric Creatures)

Just click on an animal's name to go to that information sheet. If the dinosaur you're interested in isn't here, check the Dinosaur Dictionary or the list of Dinosaur Genera. Names with an asterisk (*) were not dinosaurs.
How to write a great dinosaur report.

For dinosaur printouts, click here.

For brief dinosaur fact sheets, click here.




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