Paleobotanical evidence for Mediterranean climates in the western Canadian paleoarctic during the late middle Eocene

The data provided here is for a paleoclimate and paleoenvironmental reconstruction of the Fifteenmile River fossil flora, located in west central Yukon Territory, Canada. The Fifteenmile River flora provides a record of a high latitude late middle Eocene forest ecosystem. Plant macrofossil collections were investigated to assess the paleoclimate of the forest. Provided here are the leaf data used for physiognomic paleoclimate analyses (Leaf Area Analysis, Leaf Margin Analysis, and CLAMP), and the CLAMP regression models used for the study. Additionally, we provide the climate data (means and standard deviations) for the modern plants that were used as nearest living relatives (NLR) for Bioclimatic Analysis of the fossil flora from Fifteenmile River. Furthermore, as the plants and plant data were sourced from the Global Biodiversity Information Facility (GBIF) and are available online (https://www.gbif.org) we provide the doi of each plant record sourced from the GBIF.