@article {38831,
	title = {Foraminiferal biostratigraphy of Cretaceous marine cyclothems},
	volume = {Special Paper 39},
	year = {1993},
	note = {In: Evolution of the Western Interior Basin. Ed by W. G. E. Caldwell and E. G. Kauffman},
	pages = {477-520},
	institution = {Geological Association of Canada},
	author = {Caldwell, W. G. E. and Diner, R. and Eicher, D. G. and Fowler, S. P. and North, B. R. and Stelck, C. R. and von Holdt Wilhelm, L.}
}
