Ammolagena clavata ( Jones and Parker, 1860 )

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 : 404

Ammolagena clavata ( Jones and Parker, 1860)

Fig. 6g –h

1860. Trochammina irregularis (d’Orbigny) var. clavat Jones and Parker ; Carpenter et al., p. 142, pl. 11, fig. 6.

1987. Ammolagena clavata (Jones & Parker) ; Loeblich and Tappan, p. 49, pl. 36, fig. 16.

2005. Ammolagena clavata (Jones & Parker) ; Kaminski and Gradstein, pp. 165–168, pl. 21, fig. 21.

Material

A total of 141 specimens from the Baddeckenstedt section, 28 specimens from the Söhlde section, 100 specimens from the Wunstorf Wu2010/1 core, 154 specimens from the Wunstorf Wu2010/3 core, and 15 specimens from the Wunstorf Wu2010/4 core.

Remarks

This species usually occurs only in diverse agglutinated foraminiferal assemblages and can be used as an indicator for a low supply of clastic material ( Waśkowska, 2014).

Occurrence

Abundant to common in the Cenomanian and rare to very rare in the Turonian.

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.