Benthic foraminiferal assemblages from the Safranbolu Formation (Cuisian, Eocene),Northwest Anatolia, Turkey

作者：Kubra Okur,Hatice Kutluk

摘要：Twenty-one outcrop samples collected from a 28-m-thick section from the Safranbolu Formation of the southwestern part of the Safranbolu Basin,Anatolia,Turkey yielded well-preserved benthic foraminifera belonging mainly to the genera Alveolina,Nummulites,Assilina,Rotalia,Disclocyclina and Orbitolites.Alveolina is the most diversified genus that is represented by sixteen species:Alveolina archiaci,A.axiampla,A.barattoloi,A.carantana,A.colatiensis,A.cuspidata,A.distefanoi,A.histrica,A.lehneri,A.oblonga,A.polatliensis,A.rakoveci gueroli,A.ruetimeyeri,A.rugosa,A.safranboluensis and A.sirelii.Alveolina safranboluensis and A.sirelii are described new.Comparison of the fossil assemblage with those assemblages previously reported from both Turkey and other Tethyan sub-basins revealed that the deposition occurred during the Cuisian(Eocene)and corresponded to Shallow Benthic Foraminiferal Zones(SBFZ)10–12.The abundance and diversity of the larger benthic foraminifera indicated that the Safranbolu Formation was deposited under transgressive conditions.

发文机构：Department of Geology

关键词：EOCENECuisianSafranboluFORMATIONBENTHICFORAMINIFERAAlveolinaNORTHWESTANATOLIA

分类号： Q915[天文地球—古生物学与地层学][生物学—古生物学]