Type	Region
	Layer	Chainman Sh., up.pt Jensen Mb.
	Layer	Chainman Sh., up.pt. Jensen Mb.
	Layer	Chainman Sh., up.pt. Jensen Mb.
	Layer	Chainman Shale
	Layer	Chainman Shale, Eu.rotuliformis BZ
	Layer	Chainman Shale, Jensen Mb.
	Layer	Chainman Shale, upper part
	Layer	Eumorphoceras girtyi BZ
	Layer	Jensen Mb., Eu. rotuliforme BZ
	Layer	Jensen Mb., Eu. rotuliforme BZ