Research Article
Planktonic Foraminiferal Biostratigraphy and Correlation Across the Cretaceous-Paleogene Transition at the Tethyan and the Atlantic Realms
Figure 13
Scale bars = 100 µm. (1–5) Plummerita hantkeninoides (Brönnimann), Upper Maastrichtian. (6) Globoconusa daubjergensis (Brönnimann), Danian. (7) Guembelitria irregularis (Morozova), Danian. (8) Guembelitria cretacea (Cushman), Danian. (9) Guembelitria trifolia (Morozova), Danian.