Locality	Layer
	Belgium, Liège, Java Gallery	bed 52
	Belgium, Liège, Mortroux	H2a
	Belgium, Namur, Hordin Gallery, Spy	near bed 38b
	Germany, Rhenish Mountains, Büsbach road cut	H2b
	Great Britain, England,Lancashire, Blackburn, Samlesbury Bottoms, R. Darven	Homoceras undulatum Zone (H2b)
	Great Britain, England,Lancashire, Blackburn, Samlesbury Bottoms, R.Darwen	H2a
	Great Britain, England,Lancashire, Roughlee	H2a
	Great Britain, England,Lancashire, Roughlee	H2b
	Great Britain, Wales,South, Barland Comon, Gower	H2b
	Ireland, Clare Co., Roadford, River Aille, Phosphate Mine	H2b
	Ireland, Limerick Co., Foynes Island	H2a