Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates

A Late Cretaceous (92 to 86 million years ago) vertebrate assemblage from the high Canadian Arctic (Axel Heiberg Island) implies that polar climates were warm (mean annual temperature exceeding 14°C) rather than near freezing. The assemblage includes large (2.4 meters long) champsosaurs, which are e...

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Published in:Science
Main Authors: Tarduno, J. A., Brinkman, D. B., Renne, P. R., Cottrell, R. D., Scher, H., Castillo, P.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1998
Subjects:
Axel Heiberg Island
Online Access:http://dx.doi.org/10.1126/science.282.5397.2241
https://www.science.org/doi/pdf/10.1126/science.282.5397.2241
id craaas:10.1126/science.282.5397.2241
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spelling craaas:10.1126/science.282.5397.2241 2024-09-15T17:56:51+00:00 Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates Tarduno, J. A. Brinkman, D. B. Renne, P. R. Cottrell, R. D. Scher, H. Castillo, P. 1998 http://dx.doi.org/10.1126/science.282.5397.2241 https://www.science.org/doi/pdf/10.1126/science.282.5397.2241 en eng American Association for the Advancement of Science (AAAS) Science volume 282, issue 5397, page 2241-2243 ISSN 0036-8075 1095-9203 journal-article 1998 craaas https://doi.org/10.1126/science.282.5397.2241 2024-09-05T04:01:12Z A Late Cretaceous (92 to 86 million years ago) vertebrate assemblage from the high Canadian Arctic (Axel Heiberg Island) implies that polar climates were warm (mean annual temperature exceeding 14°C) rather than near freezing. The assemblage includes large (2.4 meters long) champsosaurs, which are extinct crocodilelike reptiles. Magmatism at six large igneous provinces at this time suggests that volcanic carbon dioxide emissions helped cause the global warmth. Article in Journal/Newspaper Axel Heiberg Island AAAS Resource Center (American Association for the Advancement of Science) Science 282 5397 2241 2243
institution Open Polar
collection AAAS Resource Center (American Association for the Advancement of Science)
op_collection_id craaas
language English
description A Late Cretaceous (92 to 86 million years ago) vertebrate assemblage from the high Canadian Arctic (Axel Heiberg Island) implies that polar climates were warm (mean annual temperature exceeding 14°C) rather than near freezing. The assemblage includes large (2.4 meters long) champsosaurs, which are extinct crocodilelike reptiles. Magmatism at six large igneous provinces at this time suggests that volcanic carbon dioxide emissions helped cause the global warmth.
format Article in Journal/Newspaper
author Tarduno, J. A.
Brinkman, D. B.
Renne, P. R.
Cottrell, R. D.
Scher, H.
Castillo, P.
spellingShingle Tarduno, J. A.
Brinkman, D. B.
Renne, P. R.
Cottrell, R. D.
Scher, H.
Castillo, P.
Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
author_facet Tarduno, J. A.
Brinkman, D. B.
Renne, P. R.
Cottrell, R. D.
Scher, H.
Castillo, P.
author_sort Tarduno, J. A.
title Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
title_short Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
title_full Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
title_fullStr Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
title_full_unstemmed Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates
title_sort evidence for extreme climatic warmth from late cretaceous arctic vertebrates
publisher American Association for the Advancement of Science (AAAS)
publishDate 1998
url http://dx.doi.org/10.1126/science.282.5397.2241
https://www.science.org/doi/pdf/10.1126/science.282.5397.2241
genre Axel Heiberg Island
genre_facet Axel Heiberg Island
op_source Science
volume 282, issue 5397, page 2241-2243
ISSN 0036-8075 1095-9203
op_doi https://doi.org/10.1126/science.282.5397.2241
container_title Science
container_volume 282
container_issue 5397
container_start_page 2241
op_container_end_page 2243
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