Distinguishing features: Large, blocky, with steep-walled rim and domed upper surface. Only known from LM side view
Farinacci & Howe catalog pages: S. pseudobiskayae *
Morphology: Large, blocky coccolith seen in side view, with steep-walled rim and domed upper surface.
Differentiation: Similar in overall shape to Semihololithus biskayae but has a more irregular appearance, lower birefringence image and blockier upper cover. [Bown & Newsam 2017]
Size: Holotype L = 6.6μm, H = 6.5μm (Paratype L = 6.6μm, H = 6.8μm).
|Tags||LITHS: holococcolith, hollow, CA: process, CROSS-POLARS: R-prominent,|
|Metrics||Lith size: 5->7µm; |
Data source notes: lith size from OD & extended slightly
Last occurrence (top): within NP14b subzone (46.29-47.84Ma, top in Lutetian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: Bown & Newsam 2017
Plot of occurrence data:
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