@article {6621,
	title = {Evolutionary rates and patterns among Cretaceous Bivalvia},
	journal = {Philosophical Transactions of the Royal Society of London Series B-Biological Sciences},
	volume = {284},
	year = {1978},
	note = {PDF},
	pages = {277-304},
	keywords = {bivalvia, cretaceous, evolution, fossil record, mesozoic, mollusca, speciation rates},
	author = {Kauffman, E. G.}
}
