Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates-Reference-Cited by-同舟云学术

Evidence for Extreme Climatic Warmth from Late Cretaceous Arctic Vertebrates

Published:1998-12-18 Issue:5397 Volume:282 Page:2241-2243
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Tarduno J. A.¹,Brinkman D. B.¹,Renne P. R.¹,Cottrell R. D.¹,Scher H.¹,Castillo P.¹

Affiliation:

1. J. A. Tarduno, R. D. Cottrell, H. Scher, Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY, 14627, USA. D. B. Brinkman, Royal Tyrrell Museum of Palaeontology, Drumheller, Alberta, TOJ OYO, Canada. P. R. Renne, Berkeley Geochronology Center, Berkeley, CA 94709, USA. P. Castillo, Geological Research Division, Scripps Institution of Oceanography, La Jolla, CA 92093–0220, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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