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Fig. S1 Relationship between site-mean leaf area and mean annual temperature for all calibration sites.

Fig. S2 Correlation between the percent of untoothed species in a flora and mean annual temperature for edaphically wet and dry sites.

Fig. S3 Relationship between site-mean leaf physiognomy and mean annual temperature for sites along local water availability gradients.

Fig. S4 Canonical correspondence analysis plot of all calibration and fossil sites based on leaf physiognomy.

Fig. S5 Box-and-whisker plots of leaf mass per area for nine of the 10 fossil floras used in study.

Fig. S6 Box-and-whisker plots of number of teeth to internal perimeter and Feret’s diameter ratio for all fossil floras, except Bonanza.

Table S1 Climate variables and site-mean physiognomic variables for all calibration sites

Table S2 Definitions of physiognomic and climatic variables used in study

Table S3 Correlations between site-mean physiognomic variables and climate variables

Table S4 Physiognomic scores for specimens from calibration sites

Table S5 Regression models for predicting mean annual temperature and precipitation for 92 calibration sites using all physiognomic variables

Table S6 Site-mean physiognomic variables for fossil sites

Table S7 Physiognomic scores for specimens from fossil sites

Notes S1 Geography and sampling methods for calibration sites.

Methods S1 Protocol for digitally processing fossil leaves.

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FilenameFormatSizeDescription
NPH_3615_sm_FigS1-S6.pdf217KSupporting info item
NPH_3615_sm_Methods.pdf206KSupporting info item
NPH_3615_sm_Notes.doc1070KSupporting info item
NPH_3615_sm_TableS1-7.xls2080KSupporting info item