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Murusraptor barrosaensis Likely a Megaraptorid “Giant Thief”: Patagonian Fossil of New Dinosaur Species Gives Clues to Evolutionary Origins

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A new species of megaraptorid dinosaur discovered in Sierra Barrosa in northwest Patagonia may help discern the evolutionary origins of the megaraptorid group, according to a study published July 20, 2016, in the open-access journal PLOS ONE by Philip Currie from the University of Alberta and Rodolfo Coria from the Consejo Nacional de Investigaciones Científicas y Técnicas in Argentina.

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New Theropod Dinosaur Suggests That Small T. Rex-Like Arms Evolved Multiple Times

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The discovery of a theropod dinosaur with Tyrannosaurus rex-like arms suggests that these unusual forelimbs may have evolved multiple times, according to a study published July 13, 2016 in the open-access journal PLOS ONE by Sebastián Apesteguía from the Universidad Maimónides, Argentina, and colleagues.

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The Success of the Plant-Eating Dinosaurs

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There has been a long debate about why dinosaurs were so successful. Say dinosaur, and most people think of the great flesh-eaters such as Tyrannosaurus rex, but the most successful dinosaurs were of course the plant-eaters.

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To the Breaking Point: Testing Ideas About the Evolution of Long-Necked Sauropod Dinosaurs

Sauropod dinosaurs were the largest land-dwelling animals of all time, with highly elongated necks and tails that were held suspended above the ground.

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Warming Pulses in Ancient Climate Record Link Volcanoes, Asteroid Impact and Dinosaur-Killing Mass Extinction

A new reconstruction of Antarctic ocean temperatures around the time the dinosaurs disappeared 66 million years ago supports the idea that one of the planet's biggest mass extinctions was due to the combined effects of volcanic eruptions and an asteroid impact.

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First Facial Tumour Fossil Discovered in a Dwarf Duck-Billed Dinosaur From Transylvania

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The first-ever record of a tumourous facial swelling found in a fossil has been discovered in the jaw of the dwarf dinosaur Telmatosaurus transsylvanicus, a type of primitive duck-billed dinosaur known as a hadrosaur.

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EMBARGOED

A reporter's PressPass is required to access this story until the embargo expires on 31-Jul-2016 12:00 AM EDT

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Pterosaur Flies Safely Home After 95 Million Years

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With the help of University of Alberta scientists, a newly described pterosaur has finally flown home. This spectacular fossil material was discovered in a private Lebanese limestone quarry more than a decade ago and has led to what UAlberta paleontologist Michael Caldwell calls “priceless scientific findings.”

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Mammals Began Their Takeover Long Before the Death of the Dinosaurs

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New research reports that, contrary to popular belief, mammals began their massive diversification 10 to 20 million years before the extinction of the dinosaurs.

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Antarctic Fossils Reveal Creatures Weren't Safer in the South During Dinosaur Extinction

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A study of more than 6,000 marine fossils from the Antarctic shows that the mass extinction event that killed the dinosaurs was sudden and just as deadly to life in the polar regions.

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Early Armored Dino From Texas Lacked Cousin's Club-Tail Weapon, but Had a Nose for Danger

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Pawpawsaurus's hearing wasn't keen, and it lacked the infamous tail club of Ankylosaurus. But first-ever CT scans of Pawpawsaurus's skull indicate the dino's saving grace from predators may have been an acute sense of smell.

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Strange Sea-Dwelling Reptile Fossil Hints at Rapid Evolution After Mass Extinction

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Two hundred and fifty million years ago, life on earth was in a tail-spin--climate change, volcanic eruptions, and rising sea levels contributed to a mass extinction that makes the death of the dinosaurs look like child's play. Marine life got hit hardest--96% of all marine species went extinct. For a long time, scientists believed that the early marine reptiles that came about after the mass extinction evolved slowly, but the recent discovery of a strange new fossil brings that view into question.

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Rapid Rise of the Mesozoic Sea Dragons

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In the Mesozoic, the time of the dinosaurs, from 252 to 66 million years ago, marine reptiles such as ichthyosaurs and plesiosaurs were top predators in the oceans. But their origins and early rise to dominance have been somewhat mysterious.

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New Species of Horned Dinosaur with a Spiked 'Shield'

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Spiclypeus shipporum had sideways-protruding horns over the eyes, enriches known fossil diversity of Judith River Formation.

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Top Stories 5-17-2016

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Top Stories 5-16-2016

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Top Stories 5-13-2016

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Top Stories 5-11-2016

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Top Stories 5-10-2016

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New Evidence Connects Dung Beetle Evolution to Dinosaurs

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Researchers have found an evolutionary connection between dinosaurs and dung beetles. An international team of scientists uncovered the first molecular evidence indicating that dung beetles evolved in association with dinosaurs. The findings place the origin of dung beetles (Scarabaeidae: Scarabaeinae) in the Lower Cretaceous period, with the first major diversification occurring in the middle of the Cretaceous. This timeline places their origins approximately 30 million years earlier than previously thought. The research explores the potential of a co-extinction with dinosaurs 66 million years ago. The study was published today in the open-access journal PLOS ONE.