in mobile mount
Helicopontosphaera kamptneri Hay & Mohler, 1967
Variation of Helicosphaera carteri with indistinct pores.
Hay, W. W., Mohler, H. P., 1967, Calcareous nannoplankton from Early Tertiary rocks at Point Labau, France and Paleocene-Early Eocene correlations. Journal of Paleontology 41(6), 1505-1541.
Helicopontosphaera kamptneri
Hay & Mohler, 1967
Extant
Core CG-9, eastern Venzuelan Basin