The Mesozoic Period Danny Nguyen 4 Blue

The Cretaceous Period

Dinosaur Appearance The dominant land animals were the huge dinosaurs, the largest land animals ever. They were the gigantic herbivore (plant-eaters) sauropods such as Diplodocus and Brachiosaurus. Other herbivores included Stegosaurus. Carnivorous (meat-eating) dinosaurs included Allosaurus and Dilophosaurus. The dominant land animals were the huge dinosaurs, the largest land animals ever. They were the gigantic herbivore (plant-eaters) sauropods such as Diplodocus and Brachiosaurus. Other herbivores included Stegosaurus. Carnivorous (meat-eating) dinosaurs included Allosaurus and Dilophosaurus.

Environment At the start of the early Jurassic period, the giant continent Pangaea broke up, forming the beginning of the world that we now know. There were huge volcanoes with rivers of lava and clouds of poison gases. Land that had been part of the interior of the huge continent was now coastline of smaller continents, and the climate began to change accordingly. Forests of ferns, ginkgo trees, cycads and conifers grew. The world during the Cretaceous looked very different. Its continental arrangement was different, as was the 'flora and fauna' that survived in a very different climate. The causes of the different climate and higher temperatures are, like the high sea levels, varied.

Vegetation Many plants had evolved during the Jurassic and Cretaceous periods. These periods were obviously essential for those big hungry plant eaters (herbivores ). For Example, Horsetails could be eaten and regrown quickly, which means they could be almost indestructible, providing a lot of food for the herbivores to eat. Some other plants of the Cretaceous Period are Podocarpus, Betulaceae, Araliaceae, Corneaceae, Cycadeodias and Moraceae. It also known that there was hardly any grass during the late Cretaceous Period. Many plants had evolved during the Jurassic and Cretaceous periods. These periods were obviously essential for those big hungry plant eaters (herbivores ). For Example, Horsetails could be eaten and regrown quickly, which means they could be almost indestructible, providing a lot of food for the herbivores to eat. Some other plants of the Cretaceous Period are Podocarpus, Betulaceae, Araliaceae, Corneaceae, Cycadeodias and Moraceae. It also known that there was hardly any grass during the late Cretaceous Period.

Animals The Cretaceous Period was the last of the dinosaur evolution chain, which means they all became extinct.As you probably know, an asteroid hit the Earth about 60 to 70 million years ago, causing massive destruction, making dinosaurs extinct. The vicious T-rex lived in the Cretaceous Period along with some of the other dinosaurs named Albertosaurus, Corythosaurus, Anatosaurus, Parasaurolophus Ultahraptor. The biggest dinosaur in the Cretaceous period is said to be the ‘Amphicoelias fragillimus’.