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The Triassic Period: The Evolution Of Dinosaurs

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The Triassic Period was the first period of the Mesozoic Era. A lot happened to Earth and its life-forms during the Triassic but the most celebrated event was the evolution of dinosaurs. The Triassic Period was the first period of the Mesozoic Era, and ran from 248 to 200 million years ago.Scientists first began studying dinosaurs during the 1820s, when they discovered the bones of a large land reptile buried in the English countryside. In 1842, Sir Richard Owen, first made the term “dinosaur.” Owen had examined bones from three different creatures. Each of them lived on land, was larger than any living reptile, walked with their legs directly beneath their bodies instead of out to the sides and had three more vertebrae in their hips than other known…show more content…
Some dinosaurs were covered with a type of body armor, and some probably had feathers, like their modern bird relatives. Some moved quickly, while others were lumbering and slow. Most dinosaurs were herbivores, or plant-eaters, but some were carnivorous and hunted or scavenged other dinosaurs in order to survive.At the time the dinosaurs arose, all of the Earth’s continents were connected together in one land mass, now known as Pangaea, and surrounded by one enormous ocean. Pangaea began to break apart into separate continents during the Early Jurassic Period (around 200 million years ago), and dinosaurs would have seen great changes in the world in which they lived over the course of their existence. Dinosaurs mysteriously disappeared at the end of the Cretaceous Period, around 65 million years ago. Many other types of animals, as well as many species of plants, died out around the same time, and numerous competing theories exist as to what caused this mass extinction. In addition to the great volcanic or tectonic activity that was occurring around that time, scientists have also discovered that a giant asteroid hit Earth
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