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paleontology

Douglas Long

That giant extinct shark, Megalodon? Maybe it wasn't so mega

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Scientists have identified a fossil of an herbivorous dinosaur, Psittacosaurus, being bitten by a mammal, Repenomamus. Gang Han hide caption

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Gang Han

This fossil of a mammal biting a dinosaur captures a death battle's final moments

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An artist's reconstruction of adult and newly born ichthyosaur, Shonisaurus popularis, which lived during the Triassic Period. Gabriel Ugueto / Smithsonian hide caption

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Gabriel Ugueto / Smithsonian

Fossil CSI: Cracking the case of an ancient reptile graveyard

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A photo of the the Mill Canyon Dinosaur Tracksite in Moab, Utah. A construction project at the site recently damaged some of the tracks and trace fossils. Wayne Hsieh/Flickr hide caption

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Wayne Hsieh/Flickr

Fossilized human footprints shown at the White Sands National Park in New Mexico. According to a report published in the journal Science, the impressions indicate that early humans were walking across North America around 23,000 years ago. National Park Service via AP hide caption

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National Park Service via AP

A reconstructed Neanderthal skeleton (right) and a modern-human version of a skeleton are displayed at the American Museum of Natural History in New York in 2003. A new study confirms that early humans who lived in colder places adapted to have larger bodies. Frank Franklin II/AP hide caption

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Frank Franklin II/AP

Paleontologist Yara Haridy studies fossils that range from 10,000 years old to 480 million years old. Yara Haridy hide caption

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Yara Haridy

Taking A New Look At Some Old Bones

Paleontologist Yara Haridy looks at fossilized bones for a living. When she randomly walked by a scientific poster one day, she discovered an entirely new way to take pictures of her fossils. The results are shedding new light on how bones evolved.

Taking A New Look At Some Old Bones

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Scientists in Canada have diagnosed malignant cancer for the first time in a dinosaur, a Centrosaurus apertus from 76 to 77 million years ago. Sergey Krasovskiy/Stocktrek Images/Getty Images hide caption

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Sergey Krasovskiy/Stocktrek Images/Getty Images

New Research Shows Dinosaurs Suffered From Malignant Cancer, Too

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An artist's interpretation of a baby mosasaur hatching from an egg in the Antarctic sea. Francisco Hueichaleo hide caption

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Francisco Hueichaleo

Scientists Find The Biggest Soft-Shelled Egg Ever, Nicknamed 'The Thing'

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A new analysis of what were initially thought to be microbial fossils in Greenland suggests they might instead just be mineral structures created when ancient tectonic forces squeezed stone. While most of the structures point in one direction, the red arrow shows that some point in the other direction. Courtesy of Abigail Allwood hide caption

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Courtesy of Abigail Allwood

Geologists Question 'Evidence Of Ancient Life' In 3.7 Billion-Year-Old Rocks

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A CT-scan image of the skull of an ancient bird shows how one of the earliest bird beaks worked as a pincer, in the way beaks of modern birds do, but also had teeth left over from dinosaur ancestors. The animal, called Ichthyornis, lived around 100 million years ago in what is now North America. Michael Hanson and Bhart-Anjan S. Bhullar/Nature Publishing Group hide caption

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Michael Hanson and Bhart-Anjan S. Bhullar/Nature Publishing Group

How Did Birds Lose Their Teeth And Get Their Beaks? Study Offers Clues

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A modern moth with a proboscis, the organ adapted for sucking up fluids such as nectar. Newly discovered fossil evidence suggests ancestors of such animals exists before flowering plants, raising questions about what ancient butterflies and moths used their tongue-like appendages for. Hossein Rajaei/Science Advances hide caption

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Hossein Rajaei/Science Advances

'Butterfly Tongues' Are More Ancient Than Flowers, Fossil Study Finds

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A tick grasping a dinosaur feather is preserved in 99 million-year-old amber from Myanmar. Peñalver et al/Nature Communications hide caption

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Peñalver et al/Nature Communications

Amber-Trapped Tick Suggests Ancient Bloodsuckers Feasted On Feathered Dinosaurs

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Arthritis is a joint disease that can cause cartilage destruction and erosion of the bone, as well as tendon inflammation and rupture. Affected areas are highlighted in red in this enhanced X-ray. Philippe Sellem/Paul Demri/ Voisin/Science Source hide caption

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Philippe Sellem/Paul Demri/ Voisin/Science Source

6,000-Year-Old Knee Joints Suggest Osteoarthritis Isn't Just Wear And Tear

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An artist's impression of Saccorhytus coronarius, a sea creature that lived 540 million years ago. Jian Han, Northwest University, China hide caption

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Jian Han, Northwest University, China

Scientists Describe Ancient Bag-Like Sea Creatures From China

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The hyolith Haplophrentis extends the tentacles of its feeding organ (lophophore) from between its shells. The paired spines, or "helens," are propping the animal up off the ocean floor. Danielle Dufault/(C) Royal Ontario Museum hide caption

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Danielle Dufault/(C) Royal Ontario Museum

This rock was found on a British beach. Some scientists believe it could contain fossilized brain tissue. Jamie Hiscocks/University of Cambridge hide caption

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Jamie Hiscocks/University of Cambridge

Researchers Say They've Found A Bit Of Fossilized Dinosaur Brain

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Paleoartist Peter Schouten's reconstruction of Microleo attenboroughi prowling along the branches of rain forest trees in search of prey. Peter Schouten/Courtesy of the University of New South Wales hide caption

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Peter Schouten/Courtesy of the University of New South Wales

Sauropods were one of the most successful groups of dinosaurs to ever walk the Earth. New research helps explain why. Stocktrek Images/Getty Images hide caption

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Stocktrek Images/Getty Images

Superhearing And Fast Growth ... Scientists Learn Why Sauropods Ruled

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Katherine Du/NPR

Chew On This: Slicing Meat Helped Shape Modern Humans

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