IODP SEDIS - Thesaurus -

Krebs Group
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Carboniferous
	....Pennsylvanian
	.....Middle Pennsylvanian
	......Desmoinesian
	.......Krebs Group
RT	Missouri
	Oklahoma
	Kansas
	Boggy Shale
	Hartshorne Sandstone
	Savanna Formation
SN	Central and NE Oklahoma, SE Kansas and W Missouri. Added to Thesaurus in 1985.