	Locality	Layer
	USA, Texas, Floyd Co., Cow Creek	Smithwick 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

Locality

Layer

USA, Texas, Floyd Co., Cow Creek

Smithwick 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