Praeprinsius tenuiculus
Set number: 2238
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4
10µm
Biscutum? tenuiculum Okada & Thierstein 1979
Praeprinsius vegrandis Bown et al., 2023; The holotype measures 0.8µm in length, which falls below the size range reported in the diagnosis (1.5–2.5 µm).
The holotype has a calculated length of approximately 3.0µm
Circular species of Praeprinsius exhibiting a well-defined open central area.
The species exhibits a marked increase in abundance between 63.75 Ma and 63.85 Ma.
Bown, P. R., Kim, H. & Gibbs, S. J. 2023. Danian calcareous nannofossil evolution and taxonomy with focus on sites from the North Atlantic Ocean (IODP Expedition 342, Sites U1403 and U1407). Journal of Nannoplankton Research. 41(2): 110-157
Okada, H. & Thierstein, H. R. 1979. Calcareous nannoplankton - Leg 43, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 43: 507-573.
Varol, O. & Jakubowski, M. (1989). Some new nannofossil taxa. INA Newsletter. 11(1): 24-29.
Holotype
Biscutum tenuiculum
Okada & Thierstein, 1979
Early Paleocene
DSDP Leg 43, Site 384, Northern Atlantic Ocean