IODP SEDIS - Thesaurus -

Dugger Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Carboniferous
	....Pennsylvanian
	.....Middle Pennsylvanian
	......Dugger Formation
RT	Indiana
SN	SE Indiana. Added to Thesaurus in 1989.