Herbivorous dinosaurs migrated north across Pangea beginning about 214 million years ago, coincident with a downturn in atmospheric carbon dioxide levels.
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A Little-Known Mass Extinction and the “Dawn of the Modern World”
Volcanic eruptions in what is now western Canada may have triggered a million years of rain and a mass extinction that launched the reign of the dinosaurs.
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Asteroid Impact, Not Volcanism, Likely Spelled Dinosaurs’ End
Using climate and habitat modeling, researchers show that solar dimming caused by an asteroid impact would have plunged the world into an “impact winter” and decimated dinosaur habitats.
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Dinosaurs Roar Again, Now Including a Focus on Climate Change
The newly renovated fossil hall at the Smithsonian’s National Museum of Natural History features spectacular fossils and includes a theme of human impact on life on Earth.
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King of the Tyrannosaurs Goes on Display
The biggest, oldest T. rex found to date shows how big tyrannosaurs could get.
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Signatures of Dinosaur Poop Found in Cretaceous Coal Seams
Coal analysis suggests that plant-eating dinosaurs, by walking kilometers between their picnic areas and their toilets, distributed important nutrients widely and boosted ecosystem health.
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Cores from Crater Tied to Dinosaur Demise Validate Impact Theory
Drilling into the famous, deeply buried Chicxulub crater off Mexico, researchers found deformed and porous granite that opens new avenues of research.
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Climate Warming May Have Helped Kill the Dinosaurs
New evidence indicates ancient warming spells that coincided with prodigious volcanism and a powerful meteorite impact, both seen as possible causes of mass extinctions about 66 million years ago.