Locality	Layer
		H2a
		H2b
		H2c1
		H2c2
		R1a, H.magistrorum band
		R1a, R.circumplicatile band
		R1a, R.pulchellum band
		R1a, R.umbilicatum band
		R1b, R.paucicrenulatum band
		R1b, R.todmordenense band