Formonsella pyramidosa

Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Formonsella -> Formonsella pyramidosa
Sister taxa: F. pyramidosa


Citation: Formonsella pyramidosa Thomsen, Cros, Malinverno, Ostergaard, Cortés, Geisen & Young
Rank: Species

Distinguishing features:

BCs central area with continuous cover of rather irregular plates; 
CFC process ca. 2.3 µm high with broad conical calyx of four plates with finely serrated margin, base with cross-bars.



Farinacci & Howe catalog pages: F. pyramidosa [no catalog entry yet]

Size: Coccosphere 6-8 µm; BCs 0.5-1.5 µm long;

Search data:
TagsLITHS: murolith, elliptical, CA: ca_disjunct, process,
CSPH: equant, BC-dimorphic,
MetricsLith size: 0.6->1.1µm; Coccosphere size: 8->10µm;
Data source notes: csph & lith size (BC diameter) from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY 2016]

Plot of occurrence data:


Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs V O

Thomsen, H. A. et al. (2016a). Formonsella pyramidosa (Haptophyta, Papposphaeraceae): a new weakly calcified coccolithophore genus from warm-water regions. Journal of Micropalaeontology. 35: 125-132. gs V O

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gs V O


Formonsella pyramidosa compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-4-2021

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Short stable page link: Go to to create a permanent copy of this page - citation notes

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