IODP SEDIS - Thesaurus -

Detroit River Group
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Devonian
	....Middle Devonian
	.....Detroit River Group
RT	Ontario
	Ohio
	Michigan
	Lucas Formation
	Sylvania Formation
SN	Includes Sylvania Formation, Amherstburg Formation, Lucas Formation. SE Michigan, N Ohio, and W Ontario.