Data were collected by Jonathan Payne and Adam Jost. Questions should be directed to Jonathan Payne (jlpayne@stanford.edu). dryad_ellis_data.txt - tab delimited text file containing sizes of foraminifera and taxonomic assignments dryad_stage_summary.txt - tab delimited text file containing summary measures of size and environmental covariates for each time interval dryad_ellis_data.txt data fields: Genus - genus name Species - species name Subspecies - subspecies name (if any) Order - order, following Loeblich and Tappan 1988 Logvol_mm3 - Base 10 logarithm of test volume in mm^3 Radiometric_Mya - Age of the species in millions of years dryad_stage_summary.txt data fields: Logvol_mm3_mean: Mean logvol_mm3 across all species for the given stage Logvol_mm3_95th: 95th percentile of logvol_mm3 for the given stage Logvol_N: number of species with size information for the given stage Radiometric_Mya: Midpoint age for the stage in millions of years Stage: Name of the stage O2_Berner_2006: Atmospheric oxygen concentration (%) from Berner 2006 O2_Berner_2009: Atmospheric oxygen concentration (%) from Berner 2009 O2_Berner_1989: Atmospheric oxygen concentration (%) from Berner and Canfield 1989 O2_Bergman_2004: Atmospheric oxygen concentration (%) from Bergman et al. 2004 CO2_Berner_2006: Ratio of past atmospheric carbon dioxide concentration to present day (360 ppm) from Berner 2006 CO2_Rothman_2001: Ratio of past atmospheric carbon dioxide concentration to present day (360 ppm) from Rothman 2001 CO2_Bergman_2004: Past atmospheric carbon dioxide concentration in ppm, from Bergman et al. 2004 d18O: Mean d18O value for the stage, from Veizer et al. 1999 and later supplements d13C: Mean d13C value for the stage, from Veizer et al. 1999 and later supplements Sr87: Mean 87Sr/86Sr for the stage, from Veizer et al. 1999 and later supplements Sealevel_Exxon: Mean sea level, in meters relative to present day, from Exxon dataset Sealevel_Haq: Mean sea level, in meters relative to present day, from Haq and Al-Qahtani curve, as illustrated in Miller et al. 2005 Formations: Number of gap bound rock packages for North America from the given stage, from Peters and Heim 2011 Non-foram diversity: Number of animal genera from Sepkoski database, as accessed through Shanan Peters online portal