And here we thought camels preferred warm weather.

While modern camels are native to desert regions, new research suggests their prehistoric ancestors thrived as far north as Canada's High Arctic, where the fossils of oversized, camel-like creatures were uncovered recently. This is the closest to the North Pole such remains have ever been found and is the first evidence that these large, prehistoric camels roamed the Arctic region 3.5 million years ago.

Discovered on Ellesmere Island in northern Canada, the fossils indicate that these animals were at least 30 percent larger than camels living today. Based on the height of a typical Arabian camel, the prehistoric mammals likely stood 9 feet tall or taller.

The research samples, 30 pieces of fossilized bone from the prehistoric creature's tibia, were found about 745 miles north of where North American camels were previously believed to have originated.

Lead study author Dr. Natalia Rybczynski, a research scientist at the Canadian Museum of Nature, explained the findings in a statement released by the museum:

We now have a new fossil record to better understand camel evolution, since our research shows that the Paracamelus lineage inhabited northern North America for millions of years, and the simplest explanation for this pattern would be that Paracamelus originated there. ... So perhaps some specializations seen in modern camels, such as their wide flat feet, large eyes and humps for fat may be adaptations derived from living in a polar environment.

The research also suggests that these prehistoric animals lived during a period of global warming, when the earth's temperature was 3.5 degrees to 6 degrees Fahrenheit warmer than it is today, "which is what we expect our climate to reach in the future," Rybczynski remarked, according to Planet Earth Online.

The researchers used the new technique of collagen fingerprinting to conduct their analyses. The Natural Environment Research Council's Planet Earth Online blog describes this method of identifying fossils:

The breakthrough came from Dr. Mike Buckley, a NERC research fellow at Manchester University. It uses the collagen in fossils to build a unique profile of the proteins in the bone. This fingerprint means even small fragments of bone whose DNA has long since decomposed can be labelled.

The study, "Mid-Pliocene Warm-Period Deposits in the High Arctic Yield Insight into Camel Evolution," was published online in Nature Communications on March 5.

Click through the gallery (below) to see photos of the camel fossil finds.

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• Illustration of the High Arctic camel on Ellesmere Island during the Pliocene warm period, about 3.5 million years ago. The camels lived in a boreal-type forest. The habitat includes larch trees and the depiction is based on records of plant fossils found at nearby fossil deposits.

• Close-up of a fragment of the High Arctic camel fossil lying on the ground at the Fyles Leaf Bed site in 2008. The fossil looks very similar to wood. The fossil evidence for the animal consists of about 30 bone fragments, which together form part of a limb bone of a Pliocene Epoch camel.

• The fossil bones of the High Arctic camel laid out in Natalia Rybczynski's lab at the Canadian Museum of Nature. The fossil evidence consists of about 30 bone fragments, which together form part of a limb bone of a camel.

• Natalia Rybczynski holds a small fossil bone in one hand and examines it using a small magnifying glass.

• View of Strathcona Fiord from the top of the Fyles Leaf Bed site, the area where the bones of the High Arctic camel were found. Note the dark brown peat layer just below the castellated ridge.

• (From right) Natalia Rybczynski, John Gosse, research assistant Marisa Gilbert and graduate student Travis Mitchell survey the uppers reaches of the Fyles Leaf Bed site in 2008 amidst gusts of wind-blown sand.

• The research team's camp at the Fyles Leaf Bed Site on Ellesmere Island, Nunavut, near Strathcona Fiord during the 2008 field season.

• Geologist John Gosse from Dalhousie University collects samples at the lower levels of the Fyles Leaf Bed site on Ellesmere Island in 2008. Using a technique called terrestrial cosmogenic nuclide dating, which dates the sands in the area where the camel bones were recovered, he determined their age to be at least 3.4 million years old, from the mid-Pliocene Epoch.

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