Foraminifera from the Arnager Limestone, Bornholm, have been recorded and identified. The fauna examined indicated a Coniacian age for the Arnager Limestone. On the basis of this fauna two benthonic foraminiferal zones, the Reussalle kelleri Zone and the Stensioeina exsculpta Zone, are recognized in the limestone. Apart from the index species only the biostratigraphically most significant species are discussed.