This Supp info includes the following files:

Herold2014_TPW.nc : This incldues the palaeogeography from Baatsen (2016).  
  It is essentially the Herold (2014) palaeogeography rotated to a palaeomagnetic reference frame.
  The netcdf variable name is Band1.
  It is to be used in DeepMIp sensitivity study deepmip-sens-geogpalmag.

LatLon_PD_55Ma_Herold2014.nc : 55Ma position in PD coordinates for Herold 2014 palaeogeography.
  (this means that you have a present day map showing at which lat-lon a point would be at 55Ma)

LatLon_PD_55Ma_Baatsen2016.nc : 55Ma position in PD coordinates for Baatsen 2016 palaeogeography.

LatLon_55Ma_PD_Herold2014.nc : PD position in 55Ma coordinates for Herold 2014 palaeogeography.
  (This is a 55Ma map showing from which lat-lon any point 'came' going back from present day)

LatLon_55Ma_PD_Baatsen2016.nc : PD position in 55Ma coordinates for Baatsen 2016 palaeogeography.

BIOME4-CLM4_translation_table.xlsx : translation table from BIOME4 to CLM4 vegetation types.