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Dinosaur Essays

5 samples in this category

A Brief History Of Dinosaurs

Dinosaurs first appeared in the latter half of the middle Triassic 230-240 million years ago; they were originally bipedal carnivores, and quite small relative to the colossal dinosaurs that proceeded them. These primitive dinosaurs rapidly evolved into the two major clades we know of today; Ornithischia and Saurischia, Saurischia being comprised of both Sauropoda and Therapoda. Saurischia makes up all carnivorous dinosaurs and birds, as well as the long-necked herbivorous sauropods while ornithischia is classified as any non-sauropoda herbivorous dinosaur...
3 Pages 1286 Words

Cause Of Dinosaurs Dying

Dinosaurs ruled the land, the ocean, and the sky for about 165 million years. Rex Tyrannosaurus hunts its prey with 50 to 60 banana-sized teeth. The 55-foot dragon from nose to tail frightened the ocean and ate everything they could catch. But 66 million years ago, the world’s climate changed dramatically. Suddenly, the earth became colder and darker. All dinosaurs-except for the ancestors of modern birds-and three-quarters of the creatures on Earth are extinct. To this day, scientists are still...
1 Page 524 Words

Owerview Of 3 Types Of Dinosaurs

Over the years, earth has gone through several changes. Before humans roamed the earth, there were dinosaurs. They lived here over 66 million years ago. Dinosaurs lived and moved through land, air, and water. Many Dinosaurs lived during different eras of earth’s time. They once lived and hunted where we now stand. We are constantly finding fossils of known species and entirely new ones. Misconception about them are still being disproven. We are constantly learning new things about them. This...
4 Pages 1905 Words

Theories Of The Dinosaur’s Mass Extinction

Since the discovery of ancient dinosaur fossils, scientists have gone through extensive research to reveal the conditions of their lives on Earth and how many of them truly resided on our planet all those years ago. Yet despite all of our research, there is yet one baffling question we continue to ask today- which is, what exactly caused these daunting creatures to become extinct? Many theories were produced, supported by data collected from discovered fossils, including our own environment, which...
3 Pages 1186 Words

Dinosaur Extinction: How We Know

The Cretaceous- Paleogene boundary is evidence shown in the rock layers of a mass extinction that occurred approximately 65 million years ago. From the evidence left behind of this event, leave scientists debating theories on how this sudden and significant event in Earth’s history took place, and why it led to the extinction of so many species. From the 5 massive extinctions identified in Earth’s history, the extinction of the dinosaurs of dinosaurs was by far the deadly. The most...
5 Pages 2147 Words
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