IODP SEDIS - Thesaurus -

Roca Formation
RT	Argentina
	Council Grove Group
	Danian
	K-T boundary
	Kansas
	Maestrichtian
	Nebraska
	Oklahoma
	Wolfcampian
SN	K-T age (Maestrichtian-Danian) or Paleocene of Argentina. Also a Wolfcampian member of the Council Grove Group in NE Kansas, SE Nebraska, and N Oklahoma. Indexed with age or ages as applicable.