Solisphaera helianthiformis

Classification: Coccolithophores -> Syracosphaerales -> Rhabdosphaeraceae -> Solisphaera -> Solisphaera helianthiformis
Sister taxa: S. blagnacensis, S. emidasia, S. helianthiformis, S. galbula, S. turbinella, S. tegula, S. palmula, C. miocaenica, D. moori, S. sp.,


Citation: Solisphaera helianthiformis Bollmann et al., 2006
Rank: Species

Distinguishing features: dBCs flat; CCs with tall triangular protrusions; pBCs flat, heavily-calcified

Farinacci & Howe catalog pages: Solisphaera helianthiformis + *

Morphology remarks:
  1. domal-side body coccoliths - lightly-calcified, elliptical (c. 1.4 - 1.1 µm)
  2. coronal coccoliths - with elongate, twisted, triangle-shaped protrusions (up to 2.3 µm high)
  3. planar-side body coccoliths - heavily-calcified elliptical to polygonal (c. 1.5 - 1.0 µm)

Ecology & Biogeography: deep photic

Search data:
TagsLITHS: planolith, elliptical, CA: process, PROCESS: bulbous, length-fast, spine, x-section-flat,
CSPH: oblate (broad), spherical, equant, BC-dimorphic, EqC, EqC+process, polymorphic, DETAILS: ca_disjunct,
MetricsLith size: 1->2.5µm; Coccosphere size: 8->10µm;
Sources: lith size from OD; csph size from illustrated specs
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 (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in stage). Data source: [JRY rough estimate]

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Solisphaera


    Bollmann, J., Cortes, M. Y., Kleijne, A., Østergaard, J. B. & Young, J. R. (2006). Solisphaera gen. nov. (Prymnesiophyceae), a new coccolithophore genus from the lower photic zone. Phycologia. 45(4): 465-477. gs

    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


    Solisphaera helianthiformis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-4-2020

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

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