in mobile mount
Heliolithus? conicus Perch-Nielsen, 1971b
Bowman, P. R. & Varol, O., 2021. A Taxonomic Revision of Heliolithaceae - Applications in Resolving the Problematic Calcareous Nannofossil Biostratigraphy of the Paleocene. In M. Montenary, M. (ed.). Calcareous nannofossil biostratigraphy of the Stratigraphy and timescales. 6, 43-223.
Perch-Nielsen, K., 1971d. Neue Coccolithen aus dem Paläozän von Dänemark, der Bucht von Biskaya und dem Eozän der Labrador See. Bulletin of the Geological Society of Denmark 21, 51-66.
Heliolithus conicus
Perch-Nielsen, 1971d
Late Paleocene
DSDP Leg 12, Site 119, Cantabria Seamount, Bay of Biscay., North Atlantic Ocean