Syracosphaera histrica

Classification: ntax_cenozoic -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera -> SY pulchra gp -> pulchra type -> Syracosphaera histrica
Sister taxa: S. histrica, S. pulchra


Citation: Syracosphaera histrica Kamptner, 1941
Rank: Species

Distinguishing features: BCs with spines, XCs with rib-like slits

Farinacci & Howe catalog pages: S. histrica *

XCs - similar to S. pulchra, domal, but flatter and with rib-like slits in the central part. Central part formed of two cylces of laths; outer cycle laths are short, well separated, and steeply inclined; inner cycle laths longer and sub-horizontal, bunch together in groups. 
BCs - elliptical (2.5-4.5 µm); mid wall flange beaded; central area with two concentric cycles of radial laths, inner one usually fused to form plate; low spine in centre.
CFCs - similar with well-developed spine, ca 1.5 µm high. Spine structure similar to that of BCs.

Size: Coccospheres 11-20 µm.

Biology & life-cycles: HOL = Calyptrolithophora papillifera. This association was suggested by Cros et al. (2000) but considered unproven since only only one combination coccosphere specimen was know. Subsequently Triantaphyllou et al. (2014, 2016) have documented additional specimens and the combination can now be considered as established.

See also: Syracosphaera histrica HOL ;

Search data:
TagsLITHS: murolith, elliptical, CA: ca_disjunct, grill, process,
CSPH: equant, elongated, CFC, XC, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 2.5->3.5µm; Coccosphere size: 9->14µm; Liths per sphere: 30->80
Data source notes: lith length (BCs) from illustrated specimens; csph data from Cros & Fortuño 2003; lith numbers from Yang & Wei 2003, range of estimates
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 Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: [JRY rough estimate]

Plot of occurrence data:


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

Cros, L., Kleijne, A., Zeltner, A., Billard, C. & Young, J. R. (2000b). New examples of holococcolith-heterococcolith combination coccospheres and their implications for coccolithophorid biology. In, Young, J. R., Thierstein, H. R. & Winter, A. (eds) Nannoplankton ecology and palaeocology, Proceedings of the INA7 conference, Puerto Rico, February 2002. Marine Micropaleontology. 39(1-4): 1-34. gs

Kamptner, E. (1941). Die Coccolithineen der Südwestküste von Istrien. Annalen des Naturhistorischen Museums in Wien. 51: 54-149. gs V O

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. gs

Reid, F. M. H. (1980). Coccolithophorids of the North Pacific Central Gyre with notes on their vertical and seasonal distribution. Micropaleontology. 26(2): 151-176. gs

Skejic, S. et al. (2018). Coccolithophore diversity in open waters of the middle Adriatic Sea in pre- T and post-winter periods. Marine Micropaleontology. 143(1): 30-45. gs

Triantaphyllou, M. V., Dimiza, M. D. & Karatsolis, B. (2014). Adding proofs to Syracosphaera histrica-Calyptrolithophora papillifera life-cycle association. Journal of Nannoplankton Research. 34(special): 57-59. gs V O

Triantaphyllou, M. et al. (2016). Coccolithophore combination coccospheres from the NE Mediterranean Sea: new evidence and taxonomic revisions. Micropaleontology. 61(6): 457-472. 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 V O


Syracosphaera histrica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 13-6-2021

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