Syracosphaera marginiporata

Classification: ntax_cenozoic -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera -> SY molischii gp -> molischii type -> Syracosphaera marginiporata
Sister taxa: S. andruleitii, S. molischii, S. hastata, S. marginiporata, S. ossa, S. epigrosa


Citation: Syracosphaera marginiporata Knappertsbusch, 1993
Rank: Species
Taxonomic discussion: The taxon was published as S. marginaporata by  Knappertsbusch (1993) however the name as published was incorrectly formed according to ICN Art 60.8 and so the orthography should be emended to marginiporata. [M.D. Guiry written comm. 2017]

ICN Art 60.8: Adjectival epithets that combine elements derived from two or more Greek or Latin words but are not formed in accordance with Rec. 60G.1(a) are to be corrected to conform with it, unless Rec. 60G.1(b) or (c) applies. In particular, the use, in pseudocompounding, of the genitive singular of Latin first-declension nouns (Rec. 60G.1(c)) instead of a regular compound (Rec. 60G.1(a)) is treated as an error to be corrected unless it serves to make an etymological distinction.

Distinguishing features: BCs small, large central plaque and narrow lath cycle, rim narrow smooth

Farinacci & Howe catalog pages: S. marginaporata *

Morphology: BCs - small (ca. 1.5 µm), rim narrow, smooth; laths narrow initially defining ring of pores, then usually merge to form broad, smooth central mass.
CFCs - narrow tall spine; distal flange, delicate, usually absent (illustrated by Cros 2000 pl. 5/3, Knappertsbusch 1993 pl. 2/3).
AAC not observed.
XCs - irregular, delicately calcified; flange smooth, flat, broad, weak wing development.

See also: Syracosphaera marginiporata HOL - alternate life-cycle phase;

Search data:
TagsLITHS: murolith, placolith, SHAPE: elliptical, CA: ca_disjunct, grill, plate, process,
CSPH: equant, CFC, XC, CROSS-POLARS: R-prominent, T-prominent,
MetricsLith size: 1.3->1.8µm; Coccosphere size: 3->6µm; Liths per sphere: 20->40
Data source notes: lith length (BCs) from OD & illustrated specimens; csph data from Cros & Fortuño 2003;
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:


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

Heimdal, B. R. & Gaarder, K. R. (1981). Coccolithophorids from the northern part of the eastern central Atlantic II. Heterococcolithophorids. “Meteor” Forschungsergebnisse, Reihe D, Biologie. 33: 37-69. gs

Kleijne, A. (1993b). Morphology, Taxonomy and distribution of extant coccolithophorids (Calcareous nannoplankton). Drukkerij FEBO B.V., Katwijk. 1-321. gs

Knappertsbusch, M. (1993a). Syracosphaera noroiticus sp. nov., and S. marginaporata sp. nov., (Syracosphaeraceae, Prymnesiophyta), new coccolithophorids from the Mediterranean Sea and North Atlantic Ocean. Journal of Micropalaeontology. 12(1): 71-76. gs V O

Supraha, L., Ljubesic, Z. & Henderiks, J. (2018). Combination coccospheres from the Eastern Adriatic coast: New, verified and possible life-cycle associations. Marine Micropaleontology. 141: 23-30. 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 marginiporata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-5-2021

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