@book {Michelin1847b,
	title = {Iconographie zoophytologique. Description par localit{\'e}s et terrains des polypiers fossiles de France, et pays environnants},
	volume = {7},
	year = {1847},
	pages = {249{\textendash}328 (pl. 24{\textendash}28)},
	publisher = {P. Bertrand},
	organization = {P. Bertrand},
	address = {Paris},
	keywords = {BL, JS, RCBS, TIP},
	url = {http://archive.org/details/iconographiezoop00mich},
	author = {Michelin, Hardouin}
}
@book {Michelin1847a,
	title = {Iconographie zoophytologique. Description par localit{\'e}s et terrains des polypiers fossiles de France, et pays environnants. Planches.},
	year = {1847},
	pages = {79 pl.},
	publisher = {P. Bertrand},
	organization = {P. Bertrand},
	address = {Paris},
	keywords = {JS, RCBS, TIP},
	url = {http://archive.org/details/iconographiezoopp00mich},
	author = {Michelin, Hardouin}
}
@book {Michelin1847,
	title = {Iconographie zoophytologique. Description par localit{\'e}s et terrains des polypiers fossiles de France, et pays environnants},
	volume = {8},
	year = {1847},
	pages = {329{\textendash}348 (pl. 28{\textendash}29)},
	publisher = {P. Bertrand},
	organization = {P. Bertrand},
	address = {Paris},
	keywords = {BL, JS, RCBS, TIP},
	url = {http://archive.org/details/iconographiezoop00mich},
	author = {Michelin, Hardouin}
}
@article {Gray1847,
	title = {An outline of an arrangement of stony corals},
	journal = {Annals and Magazine of Natural History, Series 1},
	volume = {19},
	year = {1847},
	pages = {120{\textendash}128},
	keywords = {RCBS, TIP},
	url = {http://books.google.com/books?id=uvAyAQAAMAAJ},
	author = {Gray, John E}
}
@article {Conrad1847,
	title = {Observations on the Eocene formation, and descriptions of one hundred and five new species of that period, from the vicinity of Vicksburg, Mississippi, with an Appendix},
	journal = {Proceedings of the Academy of Natural Sciences of Philadelphia},
	volume = {3},
	year = {1847},
	pages = {280{\textendash}299},
	keywords = {RCBS, TIP},
	url = {http://archive.org/details/proceedingsofaca03acad},
	author = {Conrad, T A}
}
