Locality	Layer
	Great Britain, England,Yorkshire, Barnoldswick, Cowdale Clough	Co1
	Italy, Sicily, Prov. Palermo, Sosio valley, Rupe del Passo di Burgio	Sosio Lst.
	USA, Georgia, Floyd Co., Rome	Chesterian, unrecognized
	USA, Kentucky, Rockcastle Co., Crab Orchard	Newman Fm.
	USA, Nevada, White Pine Co., Egan Range, Cave Valley	White Pine Shale
	USA, Nevada, White Pine Co., Snake Range, Murphy Wash	White Pine Shale
	USA, Oklahoma, Pontotoc Co., Ada, 15 mls SE of	Caney Shale, Delaware Creek Member
	USA, Oklahoma, Pontotoc Co., Ada, 6 mls SE of	Caney Shale, Delaware Creek Member
	USA, Texas, Brewster Co., Lenox, 4.5 mls ESE of	Gaptank Fm., upper part (?)