@article {6583,
	title = {Descriptions of New Species of Fossils from the Lower Silurian Formation, Cincinnati Group},
	journal = {Cincinnati Quarterly Journal of Science},
	volume = {1},
	year = {1874},
	note = {PDF},
	month = {July},
	pages = {239-242},
	keywords = {avicula, bivalvia, fossil record, mollusca, paleozoic, pterinea, Pterineidae, pterioidea, silurian, taxonomy},
	author = {James, U. P.}
}
@book {6327,
	title = {Carbonformation und Dyas in Nebraska},
	year = {1866},
	note = {PDFPteiroidea: pp. 28-33 [pp. 45-50 of the PDF], pl. 2 [p. 115 of the PDF].[Journal (?): Kaiserliche Leopoldinisch-Carolinische Deutsche Akademie Naturforscher Verhandlungen]},
	pages = {92},
	publisher = {Druck von E. Blochmann \& Sohn},
	organization = {Druck von E. Blochmann \& Sohn},
	address = {Dresden},
	keywords = {avicula, bakevellia, bakevelliidae, bivalvia, carboniferous, fossil record, gervillia, mollusca, Pteria, pteriidae, pterioidea, taxonomy},
	author = {Geinitz, H. B.}
}
@article {6132,
	title = {Sul Prmiano di Sicilia},
	journal = {Annales de G{\'e}ologie et de Pal{\'e}ontologie},
	volume = {52 Livraison},
	year = {1930},
	note = {Pls. 1-21JPG},
	month = {Janvier 1930},
	pages = {1-70},
	keywords = {avicula, bivalvia, fossil record, leiopteria, mollusca, paleozoic, permian, Pterineidae, pterioidea},
	author = {De Gregorio, A.}
}
