@article {35490,
	title = {Ichnological assemblages as depositional environmental indicators in McMurray Formation - Athabasca oil sands of northeastern Alberta},
	volume = {71},
	year = {1987},
	pages = {590-},
	publisher = {AAPG Bulletin},
	author = {Mattison, B. W. and Pemberton, S. G.}
}
