@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.}
}
