Locality	Layer
	Germany, Rhenish Mountains, Liebstein near Erdbach	Erdbacher Kalk
	Germany, Thuringia, Zadelsdorf	Geoden-Horizont im Rußschiefer
	Germany, Thuringia, Zadelsdorf	Sandstein über Rußschiefer
	USA, Indiana, Jackson Co., Rockford	Rockford Limestone