Creatures of Old
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North American (General) North American (US General American - GenAM)Transcript
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creatures of old by author of Veena Prasad, an illustrator Ca Beanie a mean the sun had just set in. The forest was in darkness. A huge lizard like creature was hiding in the bushes, who was still a za statue from the tip of its now to the curve of its tail Onley it sharp eyes moved, darting left and right. It's Nast rolls twitch. Does it smell dinner? A juicy little insect. The giant lizard got ready to pounce when suddenly the ground rumbled and shook. Animals were running in all directions. The poor lizard creature was almost run over, angrily turned back to see what was causing all the confusion go. A terrifying beast was charging down the forest path. It was taller than the tallest trees and had skin as rough. It's rock. Oh, no. Was the hunter about to become the prey? This is not a story. Such creatures actually lift on Earth a long, long time ago, at a time when there was no humans or dogs or birds. Instead, there were Mamet's dinosaurs, giant insects and even ferocious fish like creatures in the oceans. There were also strange looking plants. How do we know this because of science, a very special branch of science called paleontology, pronounced Paley on tall hoagie that is related to the history of Earth. Paleontology is the study of plants and animals that lived on Earth many many years ago, and paleontologists are scientists who study this science. Just it's the Rubens Old Palace can tell us things about King from the past, like how grand has thrown waas or what his favorite weapon, waas there clues deep inside the earth that can tell us many things about ancient animals. The clues come in many forms bones, footprints, eggs and sometimes even the body of an entire animal preserved in stone. Thes animals lived millions and millions of years ago, even before apes or humans appeared on Earth. How did they not rot and decay? And how are they still preserved? Well, when these creatures died, and as they rotted, they got buried under layers and layers of soil. The skin and flesh decayed and disappeared, but the hard bones and teeth remain because of the tightly packed soil. All these Leo's shirt layers of soil, along with the bones, became hard and turned into rock such rocks are called Brussels. When scientists first discovered huge bones buried under the surface of the earth, they did not know what these were. The bones were larger than any animal they had ever known. Bones as long as tree trunks, skulls the size of auto rickshaws, teeth as biggest ice cream cones and claws like knives. They kept putting the bones together in different ways to see if they could come up with an animal, he recognized. Finally, it all clicked into place like a puzzle. Paleontologists can tell a lot about an animal from its skeleton. For example, if the bones of the legs air larger than the bones of the hands, it's possible that this animal walked on two legs, just like the gigantic creature we met earlier. That fearsome creature is called Tyrannis Saurus Rex T. Rex for short. If the bones of all legs are equal in size, there's a good chance that this animal walked on all fours. Like the diplodocus, which had four stout legs in a really long neck. Fossils off their teeth give great clues about what ancient creatures like to eat. Many skeletons had long, sharp teeth, which are good for eating meat. Some skeletons had Onley flat, broad, smooth teeth. They were good for chewing leaves and the bark of trees, so we know that there were some vegetarian dinosaurs, too. But scientists don't always find entire skeletons to discover only a few bones, maybe a finger here of rib there, or maybe just a couple of bones from the back. Not all fossils are bones. Some are just like marks like footprints. We leave when we walk on soft mud. Dinosaurs left footprints, too, and before these prints could disappear, the soil that covered with layers of sand and rock so the prints stayed intact for millions of years. In fact, by measuring the distance between footprints, paleontologists can guess the height of the animal. They can also tell how it stood in walked. Some of the strangest fossil marks were left by plants. Paleontologists have discovered interestingly shaped leaves and flowers that cannot be seeing anywhere today. But here's the most fun clue of all. Any idea what this like be? Is it a football? Is it a cannonball? Isn't an egg That's right. It's an egg, a giant fossilized egg. Scientists that found whole eggs that evens contained the outline of an unhatched baby dinosaur inside. Perhaps they got buried in the land slider lava from a volcano. Before they could hatch in Mongolia, scientists discovered eggs along the skeleton of an adult dinosaur in an attacking pose. They thought that the big dinosaur, fancying an omelet for breakfast, had come to eat the eggs. They named it over wrapped er, meaning a hunter. Soon they started discovering many fossilized eggs, close toe over wrapped er, skeletons and different poses. They realized that it was actually the mother dinosaur, protecting her own eggs and not trying to eat them most unfairly. The name over rapture stuck. As you might have guessed. We don't know everything about these creatures. Yet there are a lot of clues that don't really fit, and some clues were put together all wrong. Scientists are still trying to figure them out. There is a lot of digging to be done. Would you like to be a paleontologist and help solve some mysteries? What do you waiting for? Grab a shovel