@article {6452,
	title = {Evolutionary response by bivalves to changing Phanerozoic sea-water chemistry},
	journal = {Geological Magazine},
	volume = {134},
	number = {3},
	year = {1997},
	note = {reprint},
	pages = {403-407},
	keywords = {bivalvia, calcification, evolution, macroevolution, mollusca, phanerozoic},
	author = {Harper, E. M. and Palmer, T. J. and Alphey, J. R.}
}
