"Augusta Member" "Aux Vases Sandstone" "Babylon Sandstone Member" "Backbone Limestone" "Bailey Limestone" "Bankston Fork Limestone Member" "Banner Formation" "Batavia Member" "Batestown Member" "Battery Rock Sandstone Member" "Baylis Formation" "Beaver Bend Limestone Member" "Beech Creek Limestone" "Beecher Member" "Belgium Member" "Bernadotte Sandstone Member" "Berry Clay Member" "Bethel Sandstone" "Beverly Tongue" "Bevier Coal Member or Bed"