@article {7183,
	title = {Centuria altera Testaceorum novorum},
	journal = {Zeitschrift f{\"u}r Malakozoologie},
	volume = {??},
	number = {9},
	year = {1848},
	note = {Avicula: 133},
	pages = {131-??},
	keywords = {avicula, bivalvia, mollusca, pinctada, Pteria, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Philippi, R. A.}
}
@book {6660,
	title = {A catalogue of the organic remains of the Permian rocks of Northumberland and Durham},
	year = {1848},
	pages = {iv+16},
	address = {Newcastle-upon-Tyne},
	author = {King, William}
}
@article {1133,
	title = {Diagnoses molluscorum novorum},
	journal = {Zeitschrift f{\"u}r Malakozoologie},
	number = {12},
	year = {1848},
	keywords = {avicula, bivalvia, mollusca, Pteria, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Dunker, [W. ]}
}
@book {1296,
	title = {A catalogue of the organic remains of the Permian rocks of Northumberland and Durham},
	year = {1848},
	pages = {iv+16},
	address = {Newcastle-upon-Tyne},
	author = {King, William}
}
@article {1481,
	title = {Centuria altera Testaceorum novorum},
	journal = {Zeitschrift f{\"u}r Malakozoologie},
	volume = {??},
	number = {9},
	year = {1848},
	note = {Avicula: 133},
	pages = {131-??},
	keywords = {avicula, bivalvia, mollusca, pinctada, Pteria, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Philippi, R. A.}
}
