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FACT SHEET: dryosaurus NAME: DRYOSAURUS (DRY-oh-SAW-rus), meaning: "Oak tree lizard" SIZE: 10 feet long, 5 feet tall at the hips (the size of a car), weighed 180 pounds TYPE OF DIET: Herbivore (leaves from plants) WHEN: Early Jurassic period (156 - 145 million years ago) WHERE: North America, Africa (Tanzania), England, Romania Dryosaurus lived in the thick forests of the late Jurassic period, about 156 to 145 million years ago. It was not a very large dinosaur. It was about 10 feet long, five feet tall at the hips, and weighed about 180 pounds. We know a lot about this dinosaur because lots of Dryosaurus skeletons have been found. It was a very common dinosaur. Dryosaurus was a bipedal dinosaur, meaning that it ran on two legs. Its back legs were thin yet strong. Its tail was stiff to help it keep its balance while it was running. Dryosaurus used its speed and agility to escape its hunters. It could run as fast as 25 miles per hour. That was fast enough to outrun most meat-eaters. Dryosaurus was an herbivore, meaning that it only ate plants. It had no front teeth but had a sharp, hard beak that could rip the leaves off plants. It could store the food it was chewing in its cheeks. This was very handy when a dinosaur had to eat and run! Dryosaurus means ”oak tree lizard”. It got this name because of the shape of its back teeth. If you saw them from the top, they would look a little like oak leaves. Dryosaurus laid eggs and most likely cared for its babies after the eggs hatched. Like most dinosaurs, a baby Dryosaurus was born small and grew quickly to its adult size. Dryosaurus was a fairly intelligent dinosaur. It had a medium-sized brain. We know this by studying the space in its skull. Fossils of Dryosaurus have been found in western North America and Africa. They have also been found in England, Romania and Tanzania. Dinosaur Days TM © 2010 Distant Train, inc. (www.distanttrain.com) all rights reserved