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

Published: 21-07-2020| Version 1 | DOI: 10.17632/m8sgvhnc8n.1
Christopher West,
David R. Greenwood,
Tammo Reichgelt,
Alexander Lowe,
Janelle Vachon,
James Basinger


The data provided here is for a comprehensive meta-analysis of paleobotanical proxy datasets from fossil plant assemblages from the middle to high latitudes in northern North America during the early Eocene. This study focuses on re-examining existing data, as well as providing new previously unpublished data, for these fossil localities. In this study we employed both physiognomic and nearest living relative analyses but focus primarily on using an ensemble analysis approach where climate estimates are produced using a probability density function. This approach provides more robust estimates for these important fossil localities and improves our understanding of climate regimes from these latitudes for both upland and lowland environments. Provided here are the new leaf measurement and taxonomic data used for this study, as well as and NLR data from sites in both the Canadian Arctic and British Columbia. The data includes: 1. All measurements used to reconstruct paleoclimate using leaf physiognomy, applying a new ensemble approach that combined a range of proxies including leaf margin analysis, leaf area analysis, CLAMP, and NLRs to arrive at the consensus estimate of mean annual temperature, mean annual precipitation and other climate variables for the middle to high latitudes in northern North America during the early Eocene. This data includes only the previously unpublished leaf measurement data. 2. The lists of fossil taxa and their nearest living relative used in the NLR analysis, the climatic envelopes used for modern taxa in NRL analysis, and the DOI's to the GBIF data used to generate the climatic envelopes.