@article {3437,
	title = {Oligocene history of the {\c C}ardak-Dazk{\i}r{\i} sub-basin (Denizli, SW Turkey): Integrated molluscan and planktonic foraminiferal biostratigraphy},
	journal = {Turkish Journal of Earth Sciences},
	volume = {19},
	year = {2010},
	pages = {473-496},
	keywords = {Chattian, Oligocene, Rupelian, Turkey},
	author = {Islamoglu, Y. and Hakyemez, A.}
}
@article {2714,
	title = {A new gastropod fauna from an Oligocene back-reef lagoonal environment in west central Florida},
	journal = {The Nautilus},
	volume = {110},
	year = {1997},
	pages = {122-138},
	keywords = {Chattian, Florida, Oligocene, Rupelian, Suwannee Formation, USA, Vicksburg Group},
	url = {http://www.biodiversitylibrary.org/item/34222$\#$page/160/mode/thumb},
	author = {Petuch, E.J.}
}
@article {458,
	title = {New Pliocene and Oligocene Olividae (Mollusca, Gastropoda) from France and the Mediterranean area},
	journal = {Contributions on Tertiary and Quaternary Geology},
	volume = {29},
	year = {1992},
	pages = {27-37},
	keywords = {Chattian, France, Mediterranean, Miocene, Oligocene (France), Pliocene (Tunesia)},
	author = {Lozouet, P.}
}
@article {3813,
	title = {A late Oligocene (Chattian B) mollusc fauna from the clay-pit of Galten Brickworks at Norre Vissing, Jylland, Denmark},
	journal = {Mededelingen van de Werkgroep voor Tertiaire en Kwartaire Geologie},
	volume = {24},
	year = {1987},
	month = {09/1987},
	pages = {193-224},
	keywords = {Chattian, Denmark, Oligocene},
	author = {Schnetler, K.I.}
}
@article {2708,
	title = {Mollusks of the Tampa and Suwannee limestones of Florida},
	journal = {State of Florida Department of Conservation, Geologi-cal Bulletin},
	volume = {15},
	year = {1937},
	pages = {1-334},
	keywords = {Aquitanian, Chattian, Florida, Hawthorn Group, Miocene, Oligocene, Rupelian, Suwannee Formation, Tampa Formation, USA, Vicksburg},
	url = {http://ufdc.ufl.edu/UF00000448/00001},
	author = {Mansfield, W.C.}
}
