Syracosphaera molischii HOL

Classification: Coccolithophores -> Holococcoliths -> tubeless -> Anthosphaera -> Syracosphaera molischii HOL
Sister taxa: S. marginiporata HOL, S. molischii HOL, A. lafourcadii, A. origami, A. periperforata, A. sp. type C, A. sp.,


Citation: Syracosphaera molischii Schiller, 1925 HOL
Rank: Species
Notes & discussion: See Kleijne 1991 for extensive discussion of the morphotype

Distinguishing features: BCs elliptical with low, rounded, protrusion; perforations barely visible

Farinacci & Howe catalog pages: Anthosphaera fragaria + *

Morphology remarks: BCs with ring of single-crystallite width perforations at base of dome, rim well developed, 1-1.5 µm long.
CFCs with high process (2.5-3 µm), lower part with angular crystallites, upper part smooth.

Biology & life-cycles: Combination coccospheres of Anthosphaera fragaria with Syracosphaera molischii have been illustrated by Cros et al. 2000  Triantaphyllou et al. (2016) and Skejic et al. 2018. There are now several clear examples of this combination, so we follow Triantaphylou et al. (2016) in reccomending that the combination is considered proven and the nomenclature adjusted. The heterococcoliths in the combination coccosphere are of S. molischii type 2, type 3 and type 4 but all have similar holococcoliths.

Search data:
TagsLITHS: holococcolith, H: cavate, conical, elliptical, RIM: flange-proximal, CA: H: fabric-irregular, pores,
CSPH: ovoid, spherical, CFC, CFC+bridge, polymorphic, DETAILS: ca_disjunct,
MetricsLith size: 1.1->1.8µm; Coccosphere size: 5->8µm; Liths per sphere: 60->75
Sources: morphom data from Cros & Fortuño (2002) & Kleijne 1991
The morphological data given here can be used on the advanced search page. See also these notes

See also: Syracosphaera molischii - heterococcolith life-cycle phase;

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: Anthosphaera


    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. Marine Micropaleontology. 39(1-4): 1-34. gs

    Gaarder, K. R. (1962). Electron Microscope Studies on Holococcolithophorids. Nytt Magasin for Botanikk. 10: 35-51. gs

    Kamptner, E. (1937). Neue und bemerkenswerte Coccolithineen aus dem Mittelmeer. Archiv für Protistenkunde. 89: 279-316. gs

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

    Norris, R. E. (1985). Indian Ocean nanoplankton. II. Holococcolithophorids (Calyptrosphaeraceae, Prymnesiophyceae) with a review of extant genera. Journal of Phycology. 21: 619-641. gs

    Schiller, J. (1925). Die planktonischen Vegetationen des adriatischen Meeres. A. Die Coccolithophoriden-Vegetation in den Jahren 1911-14. Archiv für Protistenkunde. 51: 1-130. 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. 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


    Syracosphaera molischii HOL compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-9-2019

    Taxon Search:
    Advanced Search

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

    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    Captcha Image
    Powered by Commentics