Fig. 16From: The planktonic foraminifera of the Jurassic. Part I: material and taxonomyLithostratigraphic log of the Birmenstorfer Schichten, Transversarius Zone, Middle Oxfordian in Eisengraben, Canton Aargau, Switzerland (after Oesterle 1986). Also shown are the bed by bed positions of the samples taken by Oesterle (1986) and in 2016 by Knappertsbusch and Gradstein for study of ‘Globigerina’ helvetojurassica HaeuslerBack to article page