Reticulofenestra rupeliensis

Coccolithus rupeliensis Müller,1970

Reticulofenestra kahniae de Kaenel & Bergen in Boesiger et al., 2017

The calculated size of the holotype is 10.0µm.

Large [8.0 - 12.0 µm], circular species of Reticulofenestra Hay, Mohler & Wade (1966) have a featureless central area wider than the width of the pelaga. The tube cycle is narrow and indistinct.

Reticulofenestra rupeliensis differs from other circular species Reticulofenestra bukryi Wise (1973), Reticulofenestra pospichalii de Kaenel & Bergen, in Boesiger et al. (2017) and Reticulofenestra dennei Varol (2025) by being greater than 8.0µm.

Boesiger, T. M., de Kaenel, E., Bergen, J. A., Browning, E. & Blair, S. A. 2017. Oligocene to Pleistocene taxonomy and stratigraphy of the genus Helicosphaera and other placolith taxa in the circum North Atlantic Basin. Journal of Nannoplankton Research. 37(2-3): 145-175.

Hay, W. W., Mohler, H. P. & Wade, M. E. 1966. Calcareous nannofossils from Nal'chik (northwest Caucasus). Eclogae Geologicae Helvetiae 59: 379-399.

Müller, C. 1970b. Nannoplankton-Zonen der Unteren-Meeresmolasse Bayerns. Geologica Bavarica 63: 107-118.

Wise, S. W. 1973. Calcareous nannofossils from cores recovered during Leg 18, Deep Sea Drilling Project: biostratigraphy and observations on diagenesis. Initial Reports of the Deep Sea Drilling Project 18: 569-615.

de Kaenel, E. & Mojon, P. -O. 2023. Calcareous nannofossil biostratigraphy of the Eocene/Oligocene boundary (Zones NP19–21) in the parautochthonous Subalpine UMM of the Swiss Molasse Basin (Canton Fribourg, Western Switzerland). Journal of Nannoplankton Research. 41(2): 64-96.