@article {25767,
	title = {Prograngerella, a new ancestral land snail from the Upper Cretaceous of Alberta},
	volume = {15},
	year = {1941},
	pages = {309-311},
	publisher = {Journal of Paleontology},
	url = {http://pdfserve.informaworld.com/450406_770885140_771052901.pdf},
	author = {Russell, Loris Shano}
}
