Spiroplectammina navarroana 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

Spiroplectammina navarroana Cushman, 1932

Fig. 7j

1932. Spiroplectammina navarroana Cushman , p. 96, pl. 11, fig. 14.

1989. Spiroplectammina navarroana Cushman ; Gradstein and Kaminski, p. 83, pl. 9, figs. 1a–12.

2005. Spiroplectammina navarroana Cushman ; Kaminski and Gradstein, p. 426, pl. 103, figs. 1a–12.

2017. Spiroplectammina navarroana Cushman ; Setoyama et al., p. 196, pl. 2, fig. 12.

Material

A total of 70 specimens from the Baddeckenstedt section, 338 specimens from the Söhlde section, 8 specimens from the Wunstorf Wu2010/3 core, and 285 specimens from the Wunstorf Wu2010/4 core.

Occurrence

First occurrence in the lower Cenomanian above The Rib. Very abundant in the Cenomanian–Turonian boundary interval at Wunstorf and in the upper Turonian at Söhlde, abundant to common in the upper Cenomanian to Turonian, and very rare in the lower to middle Cenomanian.

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.