Locality	Layer
	USA, Arkansas, Conway Co., Morrilton, W of Arkansas River	middle Atoka Fm.
	USA, Iowa, Wapello Co., Alpine S of Ottumwa	probably lower Cherokee Fm.
	USA, Oklahoma, Clarita	Middle Atoka Fm.
	USA, Oklahoma, Coal Co., Clarita, Barnett Hill	Atoka Fm.
	USA, Oklahoma, Murray Co., Sulphur, 3 mls S of, sec.26, T.1S., R.3E	Buckhorn Asphalt
	USA, Oklahoma, Pontotoc Co., Cherokee Co., sec.22, T.3N., R.7E.	Boggy Shale
	USA, Texas, McCulloch Co., Rochelle, 3.5 mls E of	Smithwick Shale
	USA, Texas, San Saba Co., Bend, 1 ml SW of	Smithwick Shale