Transferred to Bomolithus by Bowman & Varol 2021, since it contains 3 stacked cycles of elements, with central cycle of V-units.
Distinguishing features:
Parent taxon (Bomolithus): Three superposed cycles - disk and column strongly birefringent, medial cycle weakly birefringent. Column high.
This taxon: 6-11 µm; column wide wide with flaring sides and deep depression
| Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): within NP9 zone (55.86-57.21Ma, top in Ypresian stage). Data source: Bowman & Varol 2021, fig. 7
First occurrence (base): within NP5 zone (59.54-61.51Ma, base in Selandian stage). Data source: Bowman & Varol 2021, fig. 7
Plot of occurrence data:
Bowman, A. R. & Varol, O. (2021). A taxonomic revision of Heliolithaceae—Applications in resolving the problematic calcareous nannofossil biostratigraphy of the Paleocene. In, Montenari, M. (ed.) Stratigraphy & Timescales 6. Academic Press (2): 43-223. gs Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs OReferences:

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Bomolithus universus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-8-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20585 Go to Archive.is to create a permanent copy of this page - citation notes |
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