Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution
The mid-Pliocene was a global warm period, preceding the onset of Quaternary glaciations. Here we use cosmogenic nuclide dating to show that a fossiliferous terrestrial deposit that includes subfossil trees and the northern-most evidence of Pliocene ice wedge casts in Canada's High Arctic (Elle...
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Online Access: | https://doi.org/10.1038/ncomms2516 http://hdl.handle.net/10222/44464 |
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/44464 2023-05-15T14:25:16+02:00 Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution Rybczynski, Natalia Gosse, John C. Harington, C. Richard Wogelius, Roy A. Hidy, Alan J. Buckley, Mike 2014-02-24T16:48:34Z https://doi.org/10.1038/ncomms2516 http://hdl.handle.net/10222/44464 unknown Nature Communications Rybczynski, Natalia, John C. Gosse, C. Richard Harington, Roy A. Wogelius, et al. 2013. "Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution." Nature Communications 4: 1550-1550. 2041-1723 http://dx.doi.org/10.1038/ncomms2516 http://hdl.handle.net/10222/44464 4 1550 article 2014 ftdalhouse https://doi.org/10.1038/ncomms2516 2021-12-29T18:09:40Z The mid-Pliocene was a global warm period, preceding the onset of Quaternary glaciations. Here we use cosmogenic nuclide dating to show that a fossiliferous terrestrial deposit that includes subfossil trees and the northern-most evidence of Pliocene ice wedge casts in Canada's High Arctic (Ellesmere Island, Nunavut) was deposited during the mid-Pliocene warm period. The age estimates correspond to a general maximum in high latitude mean winter season insolation, consistent with the presence of a rich, boreal-type forest. Moreover, we report that these deposits have yielded the first evidence of a High Arctic camel, identified using collagen fingerprinting of a fragmentary fossil limb bone. Camels originated in North America and dispersed to Eurasia via the Bering Isthmus, an ephemeral land bridge linking Alaska and Russia. The results suggest that the evolutionary history of modern camels can be traced back to a lineage of giant camels that was well established in a forested Arctic. Article in Journal/Newspaper Arctic Arctic Ellesmere Island Nunavut Alaska Dalhousie University: DalSpace Institutional Repository Arctic Ellesmere Island Nunavut Nature Communications 4 1 |
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Dalhousie University: DalSpace Institutional Repository |
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The mid-Pliocene was a global warm period, preceding the onset of Quaternary glaciations. Here we use cosmogenic nuclide dating to show that a fossiliferous terrestrial deposit that includes subfossil trees and the northern-most evidence of Pliocene ice wedge casts in Canada's High Arctic (Ellesmere Island, Nunavut) was deposited during the mid-Pliocene warm period. The age estimates correspond to a general maximum in high latitude mean winter season insolation, consistent with the presence of a rich, boreal-type forest. Moreover, we report that these deposits have yielded the first evidence of a High Arctic camel, identified using collagen fingerprinting of a fragmentary fossil limb bone. Camels originated in North America and dispersed to Eurasia via the Bering Isthmus, an ephemeral land bridge linking Alaska and Russia. The results suggest that the evolutionary history of modern camels can be traced back to a lineage of giant camels that was well established in a forested Arctic. |
format |
Article in Journal/Newspaper |
author |
Rybczynski, Natalia Gosse, John C. Harington, C. Richard Wogelius, Roy A. Hidy, Alan J. Buckley, Mike |
spellingShingle |
Rybczynski, Natalia Gosse, John C. Harington, C. Richard Wogelius, Roy A. Hidy, Alan J. Buckley, Mike Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
author_facet |
Rybczynski, Natalia Gosse, John C. Harington, C. Richard Wogelius, Roy A. Hidy, Alan J. Buckley, Mike |
author_sort |
Rybczynski, Natalia |
title |
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
title_short |
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
title_full |
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
title_fullStr |
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
title_full_unstemmed |
Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution |
title_sort |
mid-pliocene warm-period deposits in the high arctic yield insight into camel evolution |
publishDate |
2014 |
url |
https://doi.org/10.1038/ncomms2516 http://hdl.handle.net/10222/44464 |
geographic |
Arctic Ellesmere Island Nunavut |
geographic_facet |
Arctic Ellesmere Island Nunavut |
genre |
Arctic Arctic Ellesmere Island Nunavut Alaska |
genre_facet |
Arctic Arctic Ellesmere Island Nunavut Alaska |
op_relation |
Nature Communications Rybczynski, Natalia, John C. Gosse, C. Richard Harington, Roy A. Wogelius, et al. 2013. "Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution." Nature Communications 4: 1550-1550. 2041-1723 http://dx.doi.org/10.1038/ncomms2516 http://hdl.handle.net/10222/44464 4 1550 |
op_doi |
https://doi.org/10.1038/ncomms2516 |
container_title |
Nature Communications |
container_volume |
4 |
container_issue |
1 |
_version_ |
1766297698577678336 |