IODP SEDIS - Thesaurus -

Western Interior
BT	North America
	.Western Interior
NT	Western Interior Seaway
RT	Canada
	United States
	Idaho
	Utah
	Wyoming
	Montana
	Dakota Aquifer
SN	Tremendous region in North America including the Great Plains, the Rocky Mountains, the Basin and Range Province of the U. S., and the interior plateaus of Canada. Indexed with countries as applicable.

Western Interior Seaway
BT	North America
	.Western Interior
	..Western Interior Seaway
RT	Alberta
	Canada
	United States
	Idaho
	Utah
	Wyoming
	Montana
	North American Cordillera
	British Columbia
	Canadian Cordillera
SN	Indexed with countries, states and/or provinces as applicable. Added to Thesaurus in 1989.