@book {Reuss1846,
	title = {Die Versteinerungen der B{\"o}hmischen Kreideformation},
	year = {1846},
	pages = {148, 51 pl.},
	publisher = {E. Schweizerbart},
	organization = {E. Schweizerbart},
	keywords = {RCBS, TIP},
	url = {http://archive.org/details/dieversteinerung00reus},
	author = {Reuss, A E}
}
@book {Michelin1846,
	title = {Iconographie zoophytologique. Description par localit{\'e}s et terrains des polypiers fossiles de France, et pays environnants},
	volume = {6},
	year = {1846},
	pages = {185{\textendash}248 (pl. 20{\textendash}23)},
	publisher = {P. Bertrand},
	organization = {P. Bertrand},
	address = {Paris},
	keywords = {BL, JS, RCBS, TIP},
	url = {http://archive.org/details/iconographiezoop00mich},
	author = {Michelin, Hardouin}
}
@book {Leymerie1846,
	title = {Statistique g{\'e}ologique et min{\'e}ralogique du d{\'e}partement de I{\textquoteright}Aube},
	year = {1846},
	pages = {676, 10 pl.},
	publisher = {Bailli{\`e}re},
	organization = {Bailli{\`e}re},
	address = {Paris},
	keywords = {BL, RCBS, TIP},
	author = {Leymerie, A}
}
@book {Dana1846,
	title = {U.S. Exploring Expedition (1838-1842). Zoophytes},
	volume = {7},
	year = {1846},
	pages = {1{\textendash}740},
	publisher = {C. Sherman},
	organization = {C. Sherman},
	address = {Philadelphia},
	keywords = {RCBS, TIP},
	url = {http://www.sil.si.edu/digitalcollections/usexex/navigation/ScientificText/USExEx19{\_}08select.cfm},
	author = {Dana, James D}
}
