Tonromeinia deflandrei Bowman & Varol, 2021
A large (8.0–11.0μm) elliptical species of Tonromeinia. The width of the central opening is greater than the width of the
discs/column.
Bowman, A. 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.
Tonromeinia deflandrei
Bowman & Varol, 2021
Late Paleocene
DSDP Leg 25, Site 245, Mozambique Channel (Davie Ridge), Indian Ocean