The Mesozoic Period The Mesozoic Period

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The Cretaceous Period The Cretaceous Period

Dinosaur Appearance Dinosaur Appearance The dominant land animals were the huge dinosaurs, the largest land The dominant land animals were the huge dinosaurs, the largest land

animals ever. They were the gigantic herbivore (plant-eaters) sauropods animals ever. They were the gigantic herbivore (plant-eaters) sauropods such as Diplodocus and Brachiosaurus. Other herbivores included such as Diplodocus and Brachiosaurus. Other herbivores included Stegosaurus. Carnivorous (meat-eating) dinosaurs included Allosaurus and Stegosaurus. Carnivorous (meat-eating) dinosaurs included Allosaurus and Dilophosaurus. Dilophosaurus.

EnvironmentEnvironment

At the start of the early Jurassic period, the giant continent Pangaea broke up, 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 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 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 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, continents, and the climate began to change accordingly. Forests of ferns, ginkgo trees, cycads and conifers grew. The world during the Cretaceous ginkgo trees, cycads and conifers grew. The world during the Cretaceous looked very different. Its continental arrangement was different, as was the 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 '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, different climate and higher temperatures are, like the high sea levels, varied. varied.

VegetationVegetation

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

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