Locality	Layer
	USA, Illinois, Sangamon Co., Springfield	Upper Coal Measures
	USA, Oklahoma, Coal Co., Clarita, Barnett Hill	Atoka Fm.
	USA, Oklahoma, Hughes Co., Hughes Co., sec.3, T.5N., R.9E.	Wetumka Fm.
	USA, Oklahoma, Okfuskee Co., Okfuskee Co., sec.36, T.12N., R.9E.	Coffeyville Fm.
	USA, Oklahoma, Pontotoc Co., Cherokee Co., sec.22, T.3N., R.7E.	Boggy Shale
	USA, Oklahoma, Pontotoc Co., Pontotoc Co., sec.33 T.5N. R.8E.	Wewoka Fm.
	USA, Oklahoma, Pontotoc Co., Stonewall, 2 mls NW of, Lovelady Switch	Union Valley Fm.
	USA, Texas, Brewster Co., Wolf Camp, NW of, Glass Mts.	Gaptank Fm., near top
	USA, Texas, Graham	Graham Fm.
	USA, Texas, McCulloch Co., Fife, 1.75 mls E of	Graham Fm., upper part
	USA, Texas, Young Co., Graham, 1 ml SW of	Graham Fm.
	USA, Texas, Young Co., South Bend, 0.5 ml SW of	Graham Fm., upper part