@article {47735,
	title = {Correlation of physical surfaces, benonites, and biozones in the Cretaceous Colorado Group from the Alberta Foothills to southwest Saskatchewan, and a revision of the Belle Fourche - Second White Specks formational boundary},
	volume = {44},
	year = {2007},
	pages = {871-888},
	publisher = {Canadian Journal of Earth Sciences},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjes\&volume=44\&articleFile=e07-004.pdf},
	author = {Tyagi, Aditya and Plint, A. Guy and McNeil, David H.}
}
