The Mesozoic Era The Age of the Dinosaurs

The Mesozoic Era The Age of the Dinosaurs

The Triassic Period § This is the first Period in the Mesozoic Era. § This is a geological period that extended from about 250 to 200 Mya. § The end and the beginning of this period are marked by major extinction events. § Both marine and continental life show an adaptive radiation. § Reptiles were really successful during this time.

The Jurassic Period u This is the second Period in the Mesozoic Era. u In the beginning of this period the continents were still together forming Pangaea but they were starting to drift apart. u The minor extinction at the end of the Triassic Period made dinosaurs abundant during this time. u The climate here was very hot and dry which made new groups of dinosaurs appear.

The Cretaceous Period n n n Although dinosaurs ruled all through the Cretaceous Period the dominant dinosaurs changed and many new ones evolved. Frogs, turtles, salamanders, snakes and crocodiles were also present during this time. But the only mammals that existed here were shrew like mammals. But all this life was lost when a meteor crashed to Earth killing all dinosaurs. The land, skies and seas would never be the same after the Mesozoic Era ended.

Websites I Used n n http: //en. wikipedia. org/wiki/triassic http: //en. wikipedia. org/wiki/mesozoic http: //www. enchantedlearning. com/subjects/di nosaurs/mesozoic/jurassic http: //science. nationalgeographic. com/science/ prehistoric-world/cretaceous. html