@article {6599,
	title = {Adaptation, exaptation, and the origin of oysters and scallops},
	journal = {Canadian Paleontology Conference 1 and Pander Society Meeting. Program and Abstracts},
	year = {1991},
	pages = {42},
	keywords = {bivalvia, evolution, mollusca, ostreoida, pterioida},
	author = {Johnston, Paul A.}
}
