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Prehistoria (663)

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! EN_90256638_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Elephant tusk evolution, artwork. These three species from the elephant evolutionary tree are: Moeritherium (top), Gomphotherium (centre) and Mammuthus (the mammoth, bottom). The artworks show the skulls, and how the tusks evolved from the incisors (front teeth). Moeritherium existed during the Eocene (55 to 38 million years ago) and had elongated incisors. Gomphotherium existed in the Oligocene (38 to 24 million years ago) and had both upper and lower tusks. The mammoths existed in the Pliocene and Pleistocene (5 million to 10,000 years ago) and only had upper tusks.
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! EN_90256638_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Elephant tusk evolution, artwork. These three species from the elephant evolutionary tree are: Moeritherium (top), Gomphotherium (centre) and Mammuthus (the mammoth, bottom). The artworks show the skulls, and how the tusks evolved from the incisors (front teeth). Moeritherium existed during the Eocene (55 to 38 million years ago) and had elongated incisors. Gomphotherium existed in the Oligocene (38 to 24 million years ago) and had both upper and lower tusks. The mammoths existed in the Pliocene and Pleistocene (5 million to 10,000 years ago) and only had upper tusks.
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! EN_90273128_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Plant evolution, diagram. Thirteen major groupings of plants are shown over four geologic time periods from 542 million years ago to 65 million years ago. There are four independent groupings: the club mosses, the horsetails and the ferns (all three at left), and the ginkgoes (far right). At centre are the cycads, seed ferns and cycadeoids, which are related. The seed ferns led to the evolution of flowering plants (top) which now dominate plant life on Earth. At right are the primitive conifers, which led to the evolution of the pines, redwoods and cypresses, the Auraucaria, and the podocarps.
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! EN_90273128_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Plant evolution, diagram. Thirteen major groupings of plants are shown over four geologic time periods from 542 million years ago to 65 million years ago. There are four independent groupings: the club mosses, the horsetails and the ferns (all three at left), and the ginkgoes (far right). At centre are the cycads, seed ferns and cycadeoids, which are related. The seed ferns led to the evolution of flowering plants (top) which now dominate plant life on Earth. At right are the primitive conifers, which led to the evolution of the pines, redwoods and cypresses, the Auraucaria, and the podocarps.
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! EN_90273128_0003 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Plant evolution, diagram. Thirteen major groupings of plants are shown over four geologic time periods from 542 million years ago to 65 million years ago. There are four independent groupings: the club mosses, the horsetails and the ferns (all three at top), and the ginkgoes (bottom). At centre are the cycads, seed ferns and cycadeoids, which are related. The seed ferns led to the evolution of flowering plants (right) which now dominate plant life on Earth. At lower centre are the primitive conifers, which led to the evolution of the pines, redwoods and cypresses, the Auraucaria, and the podocarps.
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! EN_90273128_0004 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Plant evolution, diagram. Thirteen major groupings of plants are shown over four geologic time periods from 542 million years ago to 65 million years ago. There are four independent groupings: the club mosses, the horsetails and the ferns (all three at top), and the ginkgoes (bottom). At centre are the cycads, seed ferns and cycadeoids, which are related. The seed ferns led to the evolution of flowering plants (right) which now dominate plant life on Earth. At lower centre are the primitive conifers, which led to the evolution of the pines, redwoods and cypresses, the Auraucaria, and the podocarps.
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! EN_90257438_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Extinction of the dinosaurs. Artwork of a large asteroid impacting the Earth's atmosphere at a speed of several kilometres per second. The asteroid is some ten kilometres across. An event like this is thought to have caused the extinction of the dinosaurs 65 million years ago. The asteroid hit the ocean, sending tsunamis (massive waves) around the globe, destroying coastal areas. Water vapour thrown into the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.
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! EN_90257438_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Extinction of the dinosaurs. Artwork of flying reptiles near the point of impact of a large asteroid. This asteroid is impacting the Earth's atmosphere at a speed of several kilometres per second. It is is some ten kilometres across. An event like this is thought to have caused the extinction of the dinosaurs 65 million years ago. The asteroid hit the ocean, sending tsunamis (massive waves) around the globe, destroying coastal areas. Water vapour thrown into the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.
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! EN_90257438_0003 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Extinction of the dinosaurs. Artwork of flying reptiles near the point of impact of a large asteroid. This asteroid is impacting the Earth's atmosphere at a speed of several kilometres per second. It is is some ten kilometres across. An event like this is thought to have caused the extinction of the dinosaurs 65 million years ago. The asteroid hit the ocean, sending tsunamis (massive waves) around the globe, destroying coastal areas. Water vapour thrown into the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.
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! EN_90255450_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Dinosaur in trees. Artwork of a carnivorous dinosaur among trees, in sunlight under orange skies. The dinosaurs were a group of reptiles that inhabited the Earth for over 160 million years, from the Late Triassic period (about 230 million years ago) to the end of the Cretaceous period (65 million years ago). It is thought that a large meteorite impact cause their extinction, along with many other plants and animals.
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! EN_90256147_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Early honey gathering. Cave painting, dating from around 15,000 years ago, showing the earliest evidence of the gathering of honey from bees. Cave paintings like this were found in caves in Spain. They show human figures on ropes, harvesting honey from the hives of wild bees in cliff faces. The human figure is using smoke from a burning brand to make the bees docile. The black specks are bees flying around the hunter-gatherer as he harvests the honey.
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! EN_90250467_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Carboniferous swamp, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90260503_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Giant deer (Cervus megaceros), 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90260521_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Giant moa (Dinornis) and prehistoric cow (Bos pallasii), 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90263754_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Ichthyosaurus fighting Pleisiosaurus, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90263754_0002 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Ichthyosaurus (top) and Pleisiosaurus (bottom) skeletons, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90263754_0003 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Ichthyosaurus (top) and Pleisiosaurus (bottom) skeletons, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90263757_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Ichthyosaurus skull, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90263784_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Iguanodon fighting Megalosaurus, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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! EN_90266049_0001 SCI
PHOTO: EAST NEWS/SCIENCE PHOTO LIBRARY Lepidodendron plant, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882.
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