Herrin Coal Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Herrin Coal Member
UFHerrin No. 6 Coal
RTIllinois
 Carbondale Formation
SNOf Carbondale Formation. Added to Thesaurus in 1985.