@article {7731,
	title = {The Early Cambrian <i>Halkieria</i> is a mollusc},
	journal = {Zoologica Scripta},
	volume = {34},
	year = {2005},
	note = {PDF},
	pages = {81-89},
	keywords = {cambrian, fossil record, halkieria, mollusca, morphology},
	author = {Vinther, J. and Nielsen, C.}
}
@article {7706,
	title = {Morphological and developmental macroevolution: a paleontological perspective},
	journal = {International Journal of Developmental Biology},
	volume = {47},
	year = {2003},
	note = {PDF},
	pages = {517-522},
	keywords = {cambrian explosion, disparity, evodevo, fossil record, genomics, hox, macroevolution, morphology},
	author = {Valentine, James W. and Jablonski, David}
}
@article {7059,
	title = {Pectinoid bivalves of the Permian-Triassic crisis},
	journal = {Bulletin of the American Museum of Natural History},
	volume = {227},
	year = {1995},
	note = {Figs. 1-64, tables 1-24Original volume},
	month = {December 13},
	pages = {1-95},
	keywords = {bivalvia, extinction, fossil record, mollusca, morphology, pectinidae, pectinoida, permo-triassic, phylogeny, shell morphology},
	author = {Newell, Norman D. and Boyd, Donald W.}
}
