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Prehistoria (635)

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! EN_90264901_0003 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Kentrosaurus dinosaur, computer artwork. This 4-metre-long stegosaurid dinosaur is known from fossils discovered in Tanzania in the period 1910 to 1912. The fossils date from the Late Jurassic period, 145 to 160 million years ago. This dinosaur was herbivorous, feeding on plants and other vegetation. It is thought that the spines on its back and tail were used to defend against predators.
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! EN_90269001_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Monolophosaurus dinosaur. Computer artwork of a Monolophosaurus, a carnivorous dinosaur that lived in the Late Jurassic Period (150-135 million years ago). It was named for the single crest on top of its skull. The area that Monolophosaurus was found, in Xinjiang, China, showed signs of water, making it possible that this dinosaur lived on lake or ocean shores.
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! EN_90269001_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Monolophosaurus dinosaur. Computer artwork of a Monolophosaurus, a carnivorous theropod dinosaur that lived in the Late Jurassic Period (150-135 million years ago). It was named for the single crest on top of its skull. The area that Monolophosaurus was found, in Xinjiang, China, showed signs of water, making it possible that this dinosaur lived on lake or ocean shores.
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! EN_90269905_0003 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Nedoceratops dinosaur, computer artwork. Formerly known as Diceratops, this horned herbivorous dinosaur is known from fossils discovered in 1868 in Wyoming, USA. It dates from the Late Cretaceous period, 65 to 100 million years ago. This dinosaur was herbivorous, feeding on plants and other vegetation.
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! EN_90279890_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Spinosaurus dinosaur, computer artwork. Spinosaurus lived in what is now northern Africa during the late Cretaceous period (95-80 million years ago). It was the longest carnivorous dinosaur, reaching a length of up to 16 metres. It also had a long crocodile-like head, and probably fed on fish. The sail on its back might have been used for temperature regulation or in mating displays.
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! EN_90280811_0004 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Suchomimus dinosaur, computer artwork. This bipedal spinosaurid dinosaur is known from fossils discovered in the Sahara in 1998. The fossils dates from the middle part of the Cretaceous period, 110 to 120 million years ago. This dinosaur, around 12 metres in length, was a predator and scavenger, feeding on fish and carrion. Its elongated mouth was similar to that of a crocodile.
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! EN_90280811_0005 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Suchomimus dinosaur, computer artwork. This bipedal spinosaurid dinosaur is known from fossils discovered in the Sahara in 1998. The fossils dates from the middle part of the Cretaceous period, 110 to 120 million years ago. This dinosaur, around 12 metres in length, was a predator and scavenger, feeding on fish and carrion. Its elongated mouth was similar to that of a crocodile.
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! EN_90281528_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Tarbosaurus dinosaur. Computer artwork of an Tarbosaurus, a large bipedal predator belonging to the same family as Tyrannosaurus Rex (Tyrannosauridae). Of all the tyrannosaurids, the Tarbosauryus has the smallest two-fingered forelimbs in relation to body size. It also weighed more than a ton and its mouth was equipped with dozens of large, sharp teeth and a unique locking mechanism in its lower jaw. It lived in Asia at the end of the Late Cretaceous Period (70-65 million years ago).
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! EN_90281528_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Tarbosaurus dinosaur. Computer artwork of an Tarbosaurus, a large bipedal predator belonging to the same family as Tyrannosaurus Rex (Tyrannosauridae). Of all the tyrannosaurids, the Tarbosauryus has the smallest two-fingered forelimbs in relation to body size. It also weighed more than a ton and its mouth was equipped with dozens of large, sharp teeth and a unique locking mechanism in its lower jaw. It lived in Asia at the end of the Late Cretaceous Period (70-65 million years ago).
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! EN_90283630_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Utahraptor dinosaur, artwork. Utahraptor ostrommaysorum are dromaeosaurs and thought to have been an extremely lethal group of dinosaurs because of the 'killer claws' on their feet. Utahraptor was the tallest of the dromaeosaurs which include Velociraptor and Dromaeosaurid. It measured 5-7 metres in length and weighed about 1 tonne. Utahraptors lived in what is now Utah, USA, in the Early Cretaceous Period (about 120 million years ago).
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! EN_90283630_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Utahraptor dinosaur, artwork. Utahraptor ostrommaysorum are dromaeosaurs and thought to have been an extremely lethal group of dinosaurs because of the 'killer claws' on their feet. Utahraptor was the tallest of the dromaeosaurs which include Velociraptor and Dromaeosaurid. It measured 5-7 metres in length and weighed about 1 tonne. Utahraptors lived in what is now Utah, USA, in the Early Cretaceous Period (about 120 million years ago).
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! EN_90247047_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Aucasaurus dinosaur. Computer artwork of an Aucasaurus, a medium sized dinosaur from Argentina that existed during the late Cretaceous, around 100 to 65 million years ago.
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! EN_90247047_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Aucasaurus dinosaur. Computer artwork of an Aucasaurus, a medium sized dinosaur from Argentina that existed during the late Cretaceous, around 100 to 65 million years ago.
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! EN_90249272_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Brontotherium dinosaur, computer artwork. This dinosaur belonged to the same group as horses, rhinos and tapirs and lived during the Eocene epoch (58 to 30 million years ago).
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! EN_90249272_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Brontotherium dinosaur, computer artwork. This dinosaur belonged to the same group as horses, rhinos and tapirs and lived during the Eocene epoch (58 to 30 million years ago).
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! EN_90267569_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Mammoth, prehistoric bone art. This image of a mammoth has been scratched onto a piece of mammoth's tusk. It was found in the cave of La Madeleine, Dordogne, France. This area was occupied by a prehistoric people called the Magdalenians, during the Upper Paleolithic period from 18,000 to 11,000 BC. Archaelogical research has shown that the Magdalenian diet consisted largely of meat often obtained from hunting big game.
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! EN_90253781_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Cretaceous-Tertiary extinction event. Artwork of an asteroid creating a fireball as it enters the Earth's atmosphere, with Ichthyosaurus marine reptiles (Ichthyosaurs) jumping from the sea in the foreground. This is the asteroid that is thought to have caused the extinction of the dinosaurs. The collision took place around 65 million years ago, long after the ichthyosaurs had become extinct. For this image without the asteroid, see C003/0075.
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! EN_90255545_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Diver and prehistoric life. Animals shown here include a plesiosaur (upper right), an ichthyosaur (upper left), ammonites (centre right), and a Dapedium fish (orange and blue, lower right). All these animals were present in the Jurassic Period (200 to 145 million years ago), though some were present in earlier and later geologic periods as well. All went extinct long before humans evolved. This artwork could represent time travel, or the recreation of extinct species.
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! EN_90256175_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Early solar system. Artwork of the early solar system during its formation. The Sun (orange, centre) formed from a collapsing nebula some 4.6 billion years ago. The remaining dust and gas formed a rotating disc surrounding the Sun. Slow gravitational attraction (accretion) of small particles formed these rocky asteroids (planetesimals). They in turn clumped together to form Earth-like rocky planets, or remained scattered like the present-day asteroid belt.
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! EN_90258936_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Formation of the Earth. Artwork showing the surface of an early, volcanically active Earth. This is the period when the Earth was cooling down, and the Heavy Bombardment Period had ceased. Microscopic life is flourishing, forming bacterial mats along the fringes of the water filling the volcanic craters and the impact craters.
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