|Daughter taxa: (blue => in age window 0-800Ma)|
Very small, elliptical placolith coccoliths with central-areas spanned by a perforate net. The distal shield is bicyclic and the rim structure appears to be coccolithacean.
Distinguishing features: Placolith coccoliths, typically small (c. 3 microns), with central-area spanned by a finely perforate net. The distal shield is typically bicyclic and the rim structure appears to be coccolithacean.
Farinacci & Howe catalog pages: Kilwalithus *Search data:
|Tags||LITHS: placolith, elliptical, CA: ca_disjunct, grill, vacant, |
CSPH: equant, elongated, CFC,
|Metrics||Lith size: 2->4µm;|
Last occurrence (top): in upper part of Lutetian Stage (74% up, 42.9Ma, in Lutetian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Thanetian Stage (62% up, 57.2Ma, in Thanetian stage). Data source: Total of range of species in this database
Plot of occurrence data:
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