Distinguishing features: striae on all four plates sub-parallel to coccolith width
Farinacci & Howe catalog pages: P. ziveriae *
Coccosphere, elongate, monomorphic.
Coccoliths diamond-shaped (all four edges of similar length); rim narrow with two flanges; central area filled by four plates ornamented with striae on the distal side.
Size: Coccospheres 35-55 µm long and ca. 4 µm wide, with 100-200 coccoliths. Coccolith length 1.8-2.4 µm.
Ecology & Biogeography: Mid photic, recorded form W. Meditwrranean and Caribbean
|Tags||LITHS: placolith, quadrate, CA: ca_disjunct, plate, closed, |
CSPH: tubular, monomorphic, CROSS-POLARS: rim-unicyclic,
|Metrics||Lith size: 1.8->2.4µm; Coccosphere size: 35->55µm; Liths per sphere: 100->200|
Data source notes: csph & lith size from OD
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]
Plot of occurrence data:
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