How To Use Cretaceous period In A Sentence
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The true giants did not arrive until the middle of the Cretaceous period.
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Contemporaries of the last dinosaurs, paddle-limbed mosasaurs, inhabited seas of the Cretaceous period, which ended about 66 million years ago.
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In contrast, dinosaur fossils have been traced in Triassic, Jurassic and Cretaceous periods.
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The Mesozoic era lasted from about 251 to 66 million years ago and includes the Triassic, Jurassic, and Cretaceous periods.
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A mere explanation that a pterodactyl was a kind of flying reptile belonging to the Jurassic and Cretaceous periods was insufficient.
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The mosasaur is a large marine lizard that lived around the end of the Cretaceous period, about 85 million to 65 million years ago, and inhabited the shallow seas that once covered much of Saskatchewan.
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Today paleontologists know the Badlands are full of bones of mosasaurs (giant marine reptiles that plied an inland sea there during the Cretaceous period) and pterosaurs (giant flying reptiles).
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A huge curved claw on each foot made Deinonychus a small but particularly deadly dinosaur of the Cretaceous Period.
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In the Late Cretaceous period, the world was covered with warm-temperate to tropical areas that swarmed with blood-sucking insects carrying leishmania, malaria, intestinal parasites, arboviruses and other pathogens.
How Dinosaurs disappear from earth.
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Thought to have diverged from other avian lines in the Late Cretaceous Period, the colorful animal can measure five feet tall from its helmetlike casque to its daggerlike foot spurs, and it weighs up to 125 pounds.
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Protohadros was a large ornithopod native to Texas, living at the very end of the Early Cretaceous period, right before the big extinction in the Turonian that knocked off the stegosaurs, a lot of the pterosaurs, and others.
Life's Time Capsule: Thoughts on Palaeoart II
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The genus Pteranodon includes several species of large pterosaurs from the Cretaceous period in North America.
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It may be as sharp and as striking as the stratal layer that marks the death of the dinosaurs, at the end of the Cretaceous Period.
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At sometime in the later part of the Cretaceous period the first breaks took place, changing the structure of the range from symmetrical to monoclinal and outlining the present form of the Sierra Nevada.
The Lake of the Sky Lake Tahoe in the High Sierras of California and Nevada, its History, Indians, Discovery by Frémont, Legendary Lore, Various Namings, Physical Characteristics, Glacial Phenomena, Geology, Single Outlet, Automobile Routes, Historic Town
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LeBlond, co-author of the book "Cadborosaurus: Survivor from the Deep," said the animal is "the least unlike a plesiosaur," referring to carnivorous marine reptiles thought to have gone extinct at the end of the Cretaceous Period.
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According to wiki, the Parasaurolophus is a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now North America, about 76-73 million years ago.
Archive 2009-04-01
