Locality	Layer
	Algeria, Atlas (Algeria), Djebel Bechar	upper Visean
	Algeria, Sud Oranais, Ksar El Azoudj	S3b Étage Tala Roumia
	Great Britain, England,Lancashire, Pendle Hill, Knowle Top	P1c
	Great Britain, England,Yorkshire, Pendle Hill, Little Mearley Clough	P1a
	USA, Arkansas, Independence Co., Batesville vicinity	Ruddell Shale
	USA, Arkansas, Washington Co., Fayetteville, Town Branch in SW part	Fayetteville Fm., lower shale