Calicasphaera diconstricta

Classification: ntax_cenozoic -> Holococcoliths -> open-tube -> Calicasphaera -> Calicasphaera diconstricta
Sister taxa: C. blokii, C. concava, C. diconstricta, C. sp.


Citation: Calicasphaera diconstricta Kleijne, 1991
Rank: Species

Distinguishing features: Liths sub-circular; tall stem, with two constrictions.

Farinacci & Howe catalog pages: C. diconstricta *

Size: Spheres 6-9 µm, liths 1-1.5 µm high

Search data:
TagsLITHS: holococcolith, elliptical, cylindrical, hollow, CA: vacant,
CSPH: equant, monomorphic, CROSS-POLARS: R-prominent,
MetricsLith size: 1.3->1.4µm; Coccosphere size: 6->9µm; Liths per sphere: 70->180
Data source notes: lith size (height) from Kleijne 1991; csph size from illustrated specimens;
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: [JRY rough estimate]

Plot of occurrence data:


Kleijne, A. (1991). Holococcolithophorids from the Indian Ocean, Red Sea, Mediterranean Sea and North Atlantic Ocean. Marine Micropaleontology. 17: 1-76. gs

Yang, T-N., Wei, K-Y. & Gong G-C. (2001). Distribution of coccolithophorids and coccoliths in surface ocean off northeastern Taiwan. Botanical Bulletin of the Academia Sinica. 42: 287-302. 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


Calicasphaera diconstricta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-4-2021

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

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