Woods Hollow Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Woods Hollow Shale
RTTexas
SNSW Texas. Underlies Maravillas Formation; overlies Fort Pena Formation. Added to Thesaurus in 1989.