Cyrtosphaera aculeata

Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Cyrtosphaera -> Cyrtosphaera aculeata
Sister taxa: C. aculeata, C. cidaris, C. sp.


Citation: Cyrtosphaera aculeata (Kamptner 1941) Kleijne, 1992
Rank: Species
Basionym: Acanthoica aculeata Kamptner 1941

Distinguishing features: BCs with prominent papillae CFC spines weakly developed

Farinacci & Howe catalog pages: A. aculeata * , S. lactaria * , C. lecaliae *

Morphology: Coccoliths like A. cidaris, but protrusion ends in papilla and is modified into a spine in the apical liths.

Size: Coccoliths with 26-38 laths, 1.8- 2.5 µm.

Biology & life-cycles: Possible combination coccospheres with Calyptrosphaera heimdaliae ilustrated by Triantaphyllou et al. (2016)

See also: Calyptrosphaera heimdaliae ;

Search data:
TagsLITHS: planolith, elliptical, CA: ca_disjunct, grill, process,
CSPH: equant, monomorphic,
MetricsLith size: 1.5->4µm; Coccosphere size: 6->12µm; Liths per sphere: 25->55
Data source notes: lith length from Kleijne 1992 & slightly extended; 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 No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:


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

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

Kleijne, A. (1992). Extant Rhabdosphaeraceae (coccolithophorids, class Prymnesiophyceae) from the Indian Ocean, Red Sea, Mediterranean Sea and North Atlantic Ocean. Scripta Geologica. 100: 1-63. gs

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

Winter, A., Reiss, Z. & Luz, B. (1979). Distribution of living coccolithophore assemblages in the Gulf of Elat ('Aqaba). Marine Micropaleontology. 4: 197-223. 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


Cyrtosphaera aculeata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-6-2021

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