Locality	Layer
	USA, Arkansas, Crawford Co., Cedar Creek, Hobbs quarry W of East C.C.	middle Atoka Fm.
	USA, Arkansas, Crawford Co., Mountainburg, 4 mls N of	Winslow Fm.
	USA, Arkansas, Crawford Co., Natural Dam, 2 mls SW of	Winslow Fm.
	USA, Arkansas, Crawford Co., Natural Dam, 2.5 mls S of	Winslow Fm.
	USA, Arkansas, Crawford Co., Winslow, S of St.Louis railroad tunnel	Winslow Fm.
	USA, Arkansas, Washington Co., Fayetteville, N end of Kessler Mountain	lower Atoka Fm.
	USA, Arkansas, Washington Co., Fort Smith Dam	Winslow Fm.
	USA, Arkansas, Washington Co., Lake Lucille	Winslow Fm.
	USA, Arkansas, Washington Co., Prairie Grove, 14 mls S of	Winslow Fm.
	USA, Oklahoma, Clarita	Middle Atoka Fm.
	USA, Oklahoma, Coal Co., Clarita, Barnett Hill	Atoka Fm.
	USA, Oklahoma, Coal Co., Coal Co., sec.27, T.2N., R.8E.	black shale
	USA, Oklahoma, Pontotoc Co., Pontotoc Co., sec.17, T.2N., R.7E.	Boggy Shale
	USA, Texas, Hudspeth Co., Marble Canyon, 0.25 ml N of	Smithwick 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
	USA, Texas, San Saba Co., Colorado River, 0.75 mile SE of Bend	Smithwick Shale
	USA, Texas, San Saba Co., Wallace Creek	Smithwick Shale