Nannofossil biostratigraphy of the late Cretaceous Nierental Formation, northern Calcareous Alps (Bavaria, Austria)

The nannofossil biostratigraphy of the Campanian-Maastrichtian of the Nierental Fm. is investigated. Although reworking of older sediments is partly observed, especially within turbiditic marlstones, standard nannofossil zonations for the Late Cretaceous of the low-latitude Tethyan realm can be applied. The base of the Maastrichtian, drawn at the level of the last occurrence of the planktonic foraminifera Globotruncanita calcarata, corresponds to a horizon within the nannofossil zone CC22ab, below the last occurrence of Eiffellithus eximius and Reinhardtites anthophorus, both in the Gosau and the Gams sections. -Authors