Spiroplectinella cretosa ( Cushman, 1932 )

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 : 415

Spiroplectinella cretosa ( Cushman, 1932)

Fig. 7k

1932. Spiroplectammina laevis (Roemer) var. cretosa Cushman , pl. 11, fig. 3.

1972. Spiroplectammina cretosa Cushman ; HanzlíkovAE, pl. 10. Fig. 9 .

1997. Spiroplectinella cretosa (Cushman) ; Holbourn and Kaminski, p. 136, pl. 2, figs. 4–7.

Material

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

Occurrence

Rare to very rare in the lower and middle Cenomanian of Lower Saxony.

Figures

Figure 7. Late Albian to Turonian agglutinated foraminifers from the Lower Saxonian Cretaceous; scale bars are 100 µm. (a) Reophax subfusiformis, Wunstorf Wu2010/1, 54.00m. (b) Pseudonodosinella nodulosa, Wunstorf Wu2010/4, 48.20m. (c) Pseudonodosinella parvula, Wunstorf Wu2010/4, 48.20 m. (d) Pseudonodosinella troyeri, Baddeckenstedt section, 39.00 m. (e) Haplophragmoides suborbicularis, Wunstorf Wu2010/3, 70.50 m. (f) Haplophragmoides walteri, Wunstorf Wu2010/4, 48.95 m. (g) Ammobaculites agglutinans, Söhlde section, 31.00 m. (h) Ammobaculites wenonahae, Wunstorf Wu2010/1, 19.05m. (i) Bulbobaculites problematicus, Wunstorf Wu2010/1, 24.75m. (j) Spiroplectammina navarroana, Wunstorf Wu2010/4, 48.20 m. (k) Spiroplectinella cretosa, Baddeckenstedt section, 2.00 m. (l) Bicazammina lagenaria, Söhlde section, 24.00m. (m) Parvigenerina sp. 3, Wunstorf Wu2010/4, 48.95 m. (n) Eobigenerina kuhnti, Söhlde section, 9.50m. (o) Eobigenerina variabilis, Söhlde section, 1.50 m. (p) Rectogerochammina eugubina, Wunstorf Wu2010/4, 48.95m. (q) Gerochammina stanislawi, Wunstorf Wu2010/4, 53.15 m. (r) Plectina cenomana, Wunstorf Wu2010/3, 45.00 m. (s) Plectina mariae, Wunstorf Wu2010/3, 84.00m.

Figure 9. Columnar section of the Albian to Cenomanian part of the Wunstorf core Wu 2010/1 with agglutinated foraminiferal morphogroups, Fisher alpha index, species richness, and foraminiferal events (acmes) indicated by arrows. For log legend, see Fig. 3.