THAYNES LIMESTONE--Gray limestone and limy siltstone.  J@nd, @ad
WOODSIDE SHALE--Red siltstone and shale.  J@nd, @ad
DINWOODY FORMATION
  Thrust belt--Gray to olive-drab dolomitic siltstone.  J@nd, @ad
  Northern Yellowstone area--Olive-drab dolomitic siltstone and green shale.  @cd
  North Wyoming--Olive-drab hard dolomitic thin-bedded siltstone.  J@nd, @cd, MzPz