Zygosphaera marsilii


Classification: ntax_cenozoic -> Holococcoliths -> flat-topped -> Zygosphaera -> Zygosphaera marsilii
Sister taxa: S. bannockii HOL, Z. amoena, Z. marsilii, Z. sp.

Taxonomy:

Citation: Zygosphaera marsilii (Borsetti & Cati 1976) Heimdal, 1982
Rank: Species
Basionym: Sphaerocalyptra marsilii Borsetti & Cati 1976
Synonyms:
Taxonomic discussion: Syracolithus sp. type A of Kleijne (1991) is rather similar to Z. marsilii but monomorphic and with small pyramidal bosses rather than a central ridge

Distinguishing features: Like Coronosphaera mediterranea HOL hellenica type but with three or four well-separated concentric rings of crystallites and low transverse ridge

Farinacci & Howe catalog pages: S. marsilii *

Search data:
TagsLITHS: holococcolith, elliptical, hollow, CA: concentric-ring(s),
CSPH: CFC, CROSS-POLARS: R-prominent,
MetricsLith size: 1.2->1.6µm; Coccosphere size: 6.5->8.5µm; Liths per sphere: 75->100
Data source notes: 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

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:

References:

Borsetti, A. M. & Cati, F. (1976). Il Nannoplancton calcareo vivente nel Tirreno Centro-meridionale. Parte II. Giornale di Geologia. 40(1): 209-240. gs V O

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

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

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Zygosphaera marsilii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 13-4-2021

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