Locality	Layer
	Algeria, Gourara (Sahara), Timimoun Sebkha	upper shale of Timimoun
	China, Yunnan, Baoshan district, Baoshan Block, West Yunnan	Qingshuigou Fm., Tn3 or early Viséan
	Great Britain, England,Derbyshire, Castleton, Cowlow Nick	B2
	Great Britain, England,Derbyshire, Castleton, Treak Cliff	B2 - P1a
	Great Britain, England,Isle of Man, Poolvash	B2
	Great Britain, England,Yorkshire, Cracoe, Stebden Hill	B2
	Great Britain, England,Yorkshire, Cracoe,Elbolton	B2
	Great Britain, England,Yorkshire, Malham	B2
	Great Britain, England,Yorkshire, Narrowdale	B2
	Great Britain, England,Yorkshire, Pendle Hill, Swardean Clough	B2