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https://hdl.handle.net/2440/85215
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Type: | Journal article |
Title: | Evolution of the earliest horses driven by climate change in the Paleocene-Eocene Thermal Maximum |
Author: | Secord, R. Bloch, J. Chester, S. Boyer, D. Wood, A. Wing, S. Kraus, M. McInerney, F. Krigbaum, J. |
Citation: | Science, 2012; 335(6071):959-962 |
Publisher: | American Association for the Advancement of Science |
Issue Date: | 2012 |
ISSN: | 0036-8075 1095-9203 |
Statement of Responsibility: | Ross Secord, Jonathan I. Bloch, Stephen G. B. Chester, Doug M. Boyer, Aaron R. Wood, Scott L. Wing, Mary J. Kraus, Francesca A. McInerney, John Krigbaum |
Abstract: | Body size plays a critical role in mammalian ecology and physiology. Previous research has shown that many mammals became smaller during the Paleocene-Eocene Thermal Maximum (PETM), but the timing and magnitude of that change relative to climate change have been unclear. A high-resolution record of continental climate and equid body size change shows a directional size decrease of ~30% over the first ~130,000 years of the PETM, followed by a ~76% increase in the recovery phase of the PETM. These size changes are negatively correlated with temperature inferred from oxygen isotopes in mammal teeth and were probably driven by shifts in temperature and possibly high atmospheric CO2 concentrations. These findings could be important for understanding mammalian evolutionary responses to future global warming. |
Keywords: | Animals Equidae Horses Carbon Dioxide Oxygen Isotopes Body Size Humidity Temperature Atmosphere Fossils Wyoming Climate Change Global Warming Biological Evolution |
Rights: | ©2012 by the American Association for the Advancement of Science; |
DOI: | 10.1126/science.1213859 |
Published version: | http://dx.doi.org/10.1126/science.1213859 |
Appears in Collections: | Aurora harvest 2 Geology & Geophysics publications |
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