Their findings were published on Tuesday in scientific journal Open Quaternary.
A team of researchers gain known the teeth, which had been stumbled on within the Yukon within the Seventies, as belonging to hyenas 1,000,000 years within the past.
Scientists had prolonged hypothesised that they also can belong to hyenas, however the idea had no longer been confirmed. Prior to this discovery, bones of the Chasmaporthetes have been found as far north as Mongolia and the southern United States, but nowhere in between the two regions.
"It is wonderful to imagine hyenas thriving in the harsh conditions above the Arctic Circle during the Ice Age", said study co-author and Yukon paleontologist Grant Zazula in a University at Buffalo release.
Hyena fossils have also appeared in numerous places before, including Europe, Mexico, America, and Asia.
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There are only four species of hyena around today, but these animals were once diverse, featuring dozens of species that spanned the Northern Hemisphere. The ancient hyena teeth give scientists evidence that these ancient predators used to live in Beringia, the area around the Bering Strait that's believed to have held the connection between today's Russian Federation and Alaska. The teeth damage up on present on the Canadian Museum of Nature in Ottawa, which is the place Mr Zazula first saw them. "We meant to be provocative with the pale fur of the hyenas, to speculate on potential camouflage these Arctic predators may have had", said Tseng.
"It is wonderful to imagine hyenas thriving in the harsh conditions above the Arctic Circle during the ice age", says study co-author Grant Zazula, Government of Yukon paleontologist.
Extra trying out constructive the age of the fossils to be between 850,000 and 1.4 million years feeble. But hyenas moved into North America much earlier.
The two teeth were found during a paleontological expedition in Yukon's Old Crow Basin in 1973. One tooth was discovered by Richard "Dick" Harington, Gerry Fitzgerald and Charlie Thomas, and the other by Brenda Beebe and William Irving. But hyenas actually arose in Europe or Asia about 20 million years ago. But out of more than 50,000 specimen nonetheless, handiest two that would belong to a hyena were stumbled on. "Because (Tseng) is so well-versed in hyena fossils he knew all of a sudden gorgeous away what they were".
Tseng drove to Ottawa from Buffalo in February 2019 to view the specimens. This became possible after Zazula, together with Jack Tseng, an evolutionary biologist and specialist in hyenas and Lars Werdelin carried out a study centering on the fossils.
This further shed light on the vast difference of ancient hyenas to modern ones. Scientists previously tracked hyena fossils in northern America, although the fossils were mostly discovered in what is now the southern United States. Some researchers suggest the carnivores were pushed out by another adept scavenger, the short-faced bear Arctodus simus, which lived in North America until the end of the ice age, around 12,000 years ago.