Syracosphaera protrudens


Classification: ntax_cenozoic -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera -> SY molischii gp -> halldalii type -> Syracosphaera protrudens
Sister taxa: S. halldalii, S. protrudens

Taxonomy:

Citation: Syracosphaera protrudens Okada & McIntyre, 1977
Rank: Species
Taxonomic discussion: Often included in S. halldalii but separation of the two morphotypes is reasonably clear and consistent.

Distinguishing features: BC flange ridged, with long protrusions into central area

Farinacci & Howe catalog pages: S. protrudens *


Morphology: Very similar to S. halldalii but with narrower distal flange with sutural ridges (showing weak clockwise obliquity) and long teeth protruding over central area from distal flange.

Search data:
TagsLITHS: murolith, placolith, SHAPE: elliptical, CA: ca_disjunct, grill, plate, process,
CSPH: equant, elongated, CFC, CROSS-POLARS: R-prominent, T-prominent,
MetricsLith size: 2->3.5µm; Coccosphere size: 7->12µm; Liths per sphere: 50->120
Data source notes: lith length (BCs) from OD & illustrated specimens; 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: [JRY rough estimate]

Plot of occurrence data:

References:

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

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. 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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Syracosphaera protrudens compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-6-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1386 Go to Archive.is to create a permanent copy of this page - citation notes



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