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The site has been discovered in the dinosaur-rich ‘badlands’ of the Hell Creek Formation of North Dakota. Chicxulub ejecta (microtektites, impact-melt glass) is found at the site within the event ...

And sometimes, animals that went extinct millions of years ago, like dinosaurs, left their blueprints ... being excavated from the South Dakota Hell Creek Formation’s Upper Cretaceous strata.

"For almost a hundred years, the presence of oviraptorosaurs in North America was only known from a few bits of skeleton, and ...

The first Brachychampsa fossil was discovered in Montana's Hell Creek Formation—an ancient suite of rocks that was laid down near the end of the Cretaceous period. That individual animal lived ...

And sometimes, animals that went extinct millions of years ago, like dinosaurs, left their blueprints behind ... s collection after being excavated from the South Dakota Hell Creek Formation’s Upper ...