1. Dinosaurs Miss Negley’s Second Grade Class

2. Dinosaurs Dinosaurs were one of several kinds of prehistoric reptiles that lived during the, the Mesozoic Era or “Age of Reptiles”. Dinosaurs were one of several kinds of prehistoric reptiles that lived during the, the Mesozoic Era or “Age of Reptiles”. Dinosaurs evolved around 230 millions years ago. Dinosaurs evolved around 230 millions years ago. Most dinosaurs hatched out of eggs when they were born. Most dinosaurs hatched out of eggs when they were born. All of the dinosaurs lived on land. All of the dinosaurs lived on land.

3. Dinosaurs When the dinosaurs first appeared, they were very small in size. When the dinosaurs first appeared, they were very small in size. They were only about 10-15 feet long! They were only about 10-15 feet long! These first dinosaurs were mostly carnivores, but there were some omnivores too. Back in those days, they all ate meat. These first dinosaurs were mostly carnivores, but there were some omnivores too. Back in those days, they all ate meat.

4. Dinosaurs There were nearly 1,000 different types of dinosaurs. Here are a few, for example: There were nearly 1,000 different types of dinosaurs. Here are a few, for example: Triceratops Triceratops T-Rex T-Rex Eoraptor Eoraptor Troodon Troodon Megaraptor Megaraptor

5. Dinosaurs Dinosaurs did not all eat the same kinds of food. The herbivore ate only plants. The carnivore was a meat eater, so he ate other dinosaurs. The omnivore was the dinosaur that ate both plants and animals.

6. Dinosaurs The biggest dinosaurs were the plant eaters, or the herbivores. The biggest dinosaurs were the plant eaters, or the herbivores. These dinosaurs generally had very long necks so they could reach the trees for food. They also had very long tails. These dinosaurs generally had very long necks so they could reach the trees for food. They also had very long tails. They were called sauropods. They were called sauropods. The biggest sauropod recorded was nearly 130 feet long and weighed almost 100 tons!!! The biggest sauropod recorded was nearly 130 feet long and weighed almost 100 tons!!!

7. Dinosaurs There were some pretty big carnivores too though. There were some pretty big carnivores too though. The theropods were the category that these carnivore dinosaurs were in. The theropods were the category that these carnivore dinosaurs were in. The biggest one known to man was 47 feet long, it weighed 8 tons and was 12 feet tall! The biggest one known to man was 47 feet long, it weighed 8 tons and was 12 feet tall! Even though these guys were big, they had very short arms compared to their bodies! Even though these guys were big, they had very short arms compared to their bodies!

8. Dinosaurs The dinosaurs in this pictures were herbivores. The dinosaurs in this pictures were herbivores. They had a giant stomach for all the food they eat. They had a giant stomach for all the food they eat. They had a tiny head, which means they has very small brains! They had a tiny head, which means they has very small brains!

12. Dinosaurs Around 65 million years ago, at the end of the Cretaceous Period, the dinosaurs were officially extinct. Around 65 million years ago, at the end of the Cretaceous Period, the dinosaurs were officially extinct. No one really knows for sure why the dinosaurs died out. No one really knows for sure why the dinosaurs died out. One suggestion given was that the climate drastically changed and the dinosaurs could not handle it. One suggestion given was that the climate drastically changed and the dinosaurs could not handle it. Will we ever know? Maybe we will, maybe we won’t! Will we ever know? Maybe we will, maybe we won’t!