@article {6042,
	title = {Descriptions of new species of organic remains belonging to the Silurian, Devonian, and Carboniferous systems of the United States},
	journal = {Journal of the Academy of Natural Sciences of Philadelphia},
	volume = {3},
	number = {2},
	year = {1842},
	note = {PDF},
	pages = {235-280},
	keywords = {bivalvia, fossil record, mollusca, pterinea, Pterineidae, taxonomy},
	author = {Conrad, T. A.}
}
@book {1198,
	title = {Figures of molluscous animals, selected from various authors},
	volume = {5. Conchif},
	year = {1842},
	publisher = {Longman \& Co.},
	organization = {Longman \& Co.},
	address = {London},
	keywords = {anatomy, avicula, bivalvia, crenatula, isognomonidae, malleidae, mollusca, pinna, pinnidae, pinnoidea, Pteria, pteriidae, pterioida, pterioidea, taxonomy, vulsella},
	author = {Gray, Maria Emma Smith}
}
@book {1213,
	title = {An illustrated and descriptive catalogue of recent bivalve shells},
	year = {1842},
	pages = {xviii+392},
	publisher = {Williams and Norgate},
	organization = {Williams and Norgate},
	address = {London},
	keywords = {avicula, bivalvia, electroma, mollusca, pinctada, Pteria, pteriidae, pterioidea, taxonomy},
	author = {Hanley, Sylvanus}
}
@book {1445,
	title = {Histoire physique, politique et naturelle de l{\textquoteright}Ile de Cuba, par M. Ramon de la Sagra},
	volume = {5, Mollusq},
	year = {1842},
	publisher = {Arthus Bertrand},
	organization = {Arthus Bertrand},
	address = {Paris},
	keywords = {avicula, aviculidae, bivalvia, isognomon, isognomonidae, malleidae, malleus, malleus candeanus, mollusca, perna, Pteria, pteriidae, pterioida, pterioidea, taxonomy},
	author = {Orbigny, A. C. V. D. d{\textquoteright}}
}
