Type	Region
	Layer	Frasnian, Dazhaimen Fm.
	Layer	Frasnian, Dazhaimen Fm.
	Layer	Frasnian, Dazhaimen Fm.
	Layer	Lower Devonian, Shebajiao Fm.
	Layer	Lower Devonian, Songlingou Fm.
	Layer	Middle Devonian, Songlingou Fm.