Locality	Layer
	USA, Indiana, Brown County, unrecorded	Gaptank Fm., near top
	USA, Texas, Brewster Co., Beckwith Hills, TX MAR M1	Gaptank Fm., unrecognized
	USA, Texas, Brewster Co., Leonard Mountain, TX MAR V3	Gaptank Fm., Uddenites Shale Mb.
	USA, Texas, Brewster Co., Marathon, 3 mls W of	Gaptank Fm.
	USA, Texas, Brewster Co., Wolf Camp, 5 mls NE of, Glass Mts.	Gaptank Fm., near top
	USA, Texas, Brewster Co., Wolf Camp, NW of, Glass Mts.	Gaptank Fm., near top