Distinguishing features:
Parent taxon (Lapideacassis): Hemispherical to cylindrical nannoliths, with walls constructed from one to several cycles of thin elements, enclosing a hollow central space; the nannolith tapers distally, and may have long apical spines or processes.
Species arranged here by number of spines.
This taxon: >3 spines; tiered; proximal collar
| LITHS: nannolith-radiate, circular, cylindrical, hollow, CA: process, CROSS-POLARS: R-prominent, |
| Lith size: 10->14µm; Segments: 9->13; Data source notes: length (excluding spines) from illustrated specimens; elem numbers from count on SEM image and extend range by +-2 |
Geological Range:
Last occurrence (top): within NP5 zone (59.54-61.51Ma, top in Selandian stage). Data source: Perch-Nielsen & Franz 1977
First occurrence (base): within NP3 zone (63.25-64.81Ma, base in Danian stage). Data source: Perch-Nielsen & Franz 1977
Plot of occurrence data:
Perch-Nielsen, K. & Franz, H. E. (1977). Lapideacassis and Scampanella, calcareous nannofossils from the Paleocene at sites 354 and 356, DSDP Leg 39, Southern Atlantic. Initial Reports of the Deep Sea Drilling Project. 39: 849-862. gs References:

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Lapideacassis multispinata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-9-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=805 Go to Archive.is to create a permanent copy of this page - citation notes |
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