![]() ![]() ![]() Fiorillo said the find has upended the theory that dinosaurs that lived in the Arctic must have migrated with the seasons. What he found is a 14 millimeter fragment from the jaw of a baby Dromaeosaur. The size of the teeth and the bone texture itself tell us that this is a very, very young individual,” said Fiorillo. “You can’t really mistake it and that’s what this bone texture is. “The bone texture on the outside is very fibrous in nature,” he said. But the teeth aren’t what interested Fiorillo most. ![]() “It’s got a couple of teeth in it…” he said. Eventually, he spotted a 14 millimeter bone fragment under his microscope. After he wrapped up his 2007 field season, he brought the material he collected back to his lab. “You’re collecting it in a bucket, so you can bring it back to your lab and then do the picking under a microscope,” he said.įiorillo is a Research Professor at Southern Methodist University in Dallas, Texas. Fiorillo said collecting dinosaur specimens here is a lot like mining. “That cobbly part is the lag deposit that is within a river system… and these bones accumulated much the way those cobbles did.”īut all the dinosaur bones he found are not intact, They accumulated there over time, in tiny fragments. “Any time you do a stream crossing, you would probably walk across a little stretch of the channel that is cobbly,” he explained. Paleontologist Anthony Fiorillo found the specimen at what’s known as Pediomys point, in what’s known as a lag deposit. A specimen discovered in a lag deposit along the Colville River, about 250 miles north of the Arctic Circle, is evidence that some dinosaurs may have lived on the North Slope year-round. (Rendering by Andrey Atuchin/SMU)Ī new discovery is changing a theory about how dinosaurs once moved about in the Arctic 70 million years ago. Artist’s rendering of a juvenile dromaeosaurid 70 million years ago on the Prince Creek Formation in northern Alaska. ![]()
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