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Climate of the Past An interactive open-access journal of the European Geosciences Union
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CP | Articles | Volume 16, issue 4
Clim. Past, 16, 1387–1410, 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 16, 1387–1410, 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 Aug 2020

Research article | 04 Aug 2020

Paleobotanical proxies for early Eocene climates and ecosystems in northern North America from middle to high latitudes

Christopher K. West et al.

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Cited articles

Archibald, S. B., Bossert, W. H., Greenwood, D. R., and Farrell, B. D.: Seasonality, the latitudinal gradient of diversity, and Eocene insects, Paleobiology, 36, 374–398, 2010. 
Archibald, S. B., Greenwood, D. R., Smith, R. Y., Mathewes, R. W., and Basinger, J. F.: Great Canadian Lagerstätten 1. Early Eocene Lagerstätten of the Okanagan Highlands (British Columbia and Washington State), Geosci. Can., 38, 155–164, 2011. 
Archibald, S. B., Greenwood, D. R., and Mathewes, R. W.: Seasonality, montane beta diversity, and Eocene insects: testing Janzen's dispersal hypothesis in an equable world, Palaeogeogr. Palaeocl., 371, 1–8, 2013. 
Archibald, S. B., Morse, G. E., Greenwood, D. R., and Mathewes, R. W.: Fossil palm beetles refine upland winter temperatures in the Early Eocene Climatic Optimum, P. Natl. Acad. Sci. USA, 111, 8095–8100, 2014. 
Basinger, J. F., Greenwood, D. R., and Sweda, T.: Early Tertiary vegetation of Arctic Canada and its relevance to paleoclimatic interpretation, in: Cenozoic plants and climates of the Arctic, Springer, Berlin, Heidelberg, 175–198, 1994. 
Publications Copernicus
Short summary
During the globally warm early Eocene 56 million years ago, lush forests extended up to the high Arctic. Fossil plants from the Canadian High Arctic and Pacific Northwest of North America are a window into this past greenhouse world. We used an improved method for plant fossil climate reconstruction that provides a consensus reconstruction from all available proxies. Results show that the early Eocene climate in northern North America was similar across a broad range of latitudes.
During the globally warm early Eocene 56 million years ago, lush forests extended up to the high...