Dinosaurs Where did dinosaurs come from? ● Dinosaurs were reptiles that live millions of years ago. ● Some scientists believe dinosaurs were ancestors of amphibians(frogs, salamanders) ● Over millions of years some of them may have developed into animals with stronger skeletons, tougher skin and hard eggs.

How long ago did they live? Dinosaurs lived during the Mesozoic Era, which is also called the AGE OF REPTILES. The history of the earth is divided into eras, or time periods. Triassic Jurassic Cretaceous MESOZOIC ERA Period 245 million Years ago 208 million Years ago 144 million Years ago 65 million Years ago

Most dinosaurs lived on land and walked with their legs under their bodies (not out to the sides like alligators) Many different kinds of dinosaurs lived on every continent. Where did dinosaurs live ?

How Big Were Dinosaurs? Some dinosaurs were extremely big, while others were small.

Three Types of Dinosaurs Carnivores-meat-eaters Herbivores-plant eaters Omnivores-meat and plant eaters

Carnivores Meat-eating dinosaurs were carnivores that hunted other animals for food. The meat eaters had long, strong legs so they could run fast. They also had strong jaws and sharp teeth and claws to tear apart their catch. Only 35% of dinosaurs were meat-eaters T-rex

Herbivores Plant-eating dinosaurs were herbivores that ate only plants. Plant-eaters had many features on their bodies that helped them eat. Some had blunt snouts, or beaks for stripping leaves and twigs. Some had pouches in their cheeks in which they stored food before eating it. 65% of dinosaurs were plant-eaters.

Omnivores Plant-eaters and meat-eaters dinosaurs were omnivores that ate both plants and meat. There were only a few known dinosaurs that were omnivores. These dinosaurs would eat plants, eggs, insects, etc. Almost all dinosaurs were “accidental omnivores” they would accidentally ingest many insects and other small animals. plateosaurus