Ammodiscus tenuissimus Grzybowski, 1898

Besen, Richard M., Struck, Ulrich & Seibertz, Ekbert, 2021, Albian to Turonian agglutinated foraminiferal assemblages of the Lower Saxony Cretaceous sub-basins - implications for sequence stratigraphy and paleoenvironmental interpretation, Fossil Record 24 (2), pp. 395-441 : 406-407

Ammodiscus tenuissimus Grzybowski, 1898

Fig. 6o 1898. Ammodiscus tenuissimus Grzybowski , p. 282, pl. 10, fig. 35.

2005. Ammodiscus tenuissimus Grzybowski ; Kaminski and Gradstein, p. 163, pl. 20, figs. 1a–7.

Material

A total of 15 specimens from the Baddeckenstedt section, 16 specimens from the Söhlde section, 71 specimens from the Wunstorf Wu2010/1 core, 61 specimens from the Wunstorf Wu2010/3 core, and 124 specimens from the Wunstorf Wu2010/4 core.

Occurrence

Abundant to common in the Cenomanian–Turonian boundary interval at Wunstorf, rare to very rare in other stratigraphical intervals, and very rare at Baddeckenstedt and Söhlde.

Figures

Figure 6. Late Albian to Turonian agglutinated foraminifera from the Lower Saxonian Cretaceous; scale bars are 100 µm. (a) Saccammina grzybowski, Wunstorf Wu2010/1, 54.00 m. (b) Psammosphaera fusca, Wunstorf Wu2010/1, 59.05 m. (c) Tipeammina elliptica, Söhlde section, 31.00 m. (d–e) Tipeammina sp. 1, Wunstorf Wu2010/4, 43.30m. (f) Hyperammina gaultina, Wunstorf Wu 2010/4, 48.20 m. (g–h) Ammolagena clavata, two specimens sticking together, Wunstorf Wu2010/3, 25.50 m. (i) Ammolagena contorta, possibly previously attached on an inoceramid prism, Wunstorf Wu2010/4, 38.20 m. (j) Caudammina ovula, Söhlde section, 31.00m. (k) Subreophax scalaris, Wunstorf Wu2010/1, 69.10 m. (l) Ammodiscus cretaceus, Wunstorf Wu 2010/4, 48.20 m. (m) Ammodiscus glabratus, Wunstorf Wu2010/1, 54.65m. (n) Ammodiscus peruvianus, Wunstorf Wu2010/1, 54.00 m. (o) Ammodiscus tenuissimus, Wunstorf Wu2010/4, 43.30 m. (p) Glomospira diffundens, Wunstorf Wu2010/1, 49.05 m. (q) Glomospira gordialis, Wunstorf Wu 2010/3, 66.05 m. (r) Repmanina charoides, Wunstorf Wu2010/4, 38.20m. (s) Lituotuba lituiformis, Wunstorf Wu 2010/4, 48.95m. (t) Rzehakina minima, Wunstorf Wu2010/1, 54.80 m.