Tipeammina sp. 1

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 : 403-404

Tipeammina sp. 1

Fig. 6d–e

Remarks

Test free, bilocular. Coarsely agglutinated, thick test. Aperture at the end of the tube as simple opening. Initial chamber is mostly not preserved, second chamber growing rapidly in diameter. Differs from Tipeammina elliptica in its much faster growth in diameter.

Material

A total of 18 specimens from the Baddeckenstedt section, 38 specimens from the Söhlde section, 2 specimens from the Wunstorf Wu2010/1 core, 3 specimens from the Wunstorf Wu2010/3 core, and 29 specimens from the Wunstorf Wu2010/4 core.

Occurrence

Rare to very rare.

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.