|Daughter taxa (time control age-window is: 0-800Ma)|
Narrow rimmed, arched placoliths with axial cross-bars.
Medium to large, elliptical to oblong Campylosphaera with a relatively narrow central area filled with broad cross-bars.
Similar to C. dela but with narrow central areas largely filled by the axial cross
Small to medium (~4-6 µm), Campylosphaera-like, broadly elliptical placolith (dark shields in XPL), with a very narrow central area filled with broad cross-bars.
Specimens which cannot be assigned to any established species
Distinguishing features: Like Cruciplacolithus but the coccoliths are longitudinally arched and typically near parallel sided, and so appear oblong in outline
Farinacci & Howe catalog pages: Campylosphaera *Search data:
|Tags||LITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, |
CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
|Metrics||Lith size: 4->10µm;|
Last occurrence (top): near base of Priabonian Stage (11% up, 37.3Ma, in Priabonian stage). Data source: Total of range of species in this database
First occurrence (base): near top of Selandian Stage (87% up, 59.5Ma, in Selandian stage). Data source: Total of range of species in this database
Plot of occurrence data:
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