SY molischii gp


Classification: Coccolithophores -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera -> SY molischii gp
Sister taxa: SY molischii gp, SY nodosa gp, SY pulchra gp, Syraco - fossil, S. sp.,

Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa
XCs elliptical discs, with a narrow rim, central part without conical depression. CFCs not differentiated.

Monothecate - no XCs. BCs with horizontal flanges and vertical tubes.

XCs “undulating” planoliths, confined to imbricate circlet around flagellar pole. CFCs with spines showing calyx with 4-fold symmetry, AACs usually present.

XCs wheel-like, with radial laths well-separated, spoke-like. BCs and XCs both show distinct chirality. CFCs not differentiated.

Taxonomy:

Citation: SY molischii gp Young et al., 2003
Rank: species group

Distinguishing features: BCs placolith-like (i.e. with proximal and distal flanges), often with ridges and irregular central area calcification, no spines. XCs variable.

Farinacci & Howe catalog pages: SY molischii gp [no catalog entry yet]

Search data:
TagsLITHS: murolith, placolith, elliptical, RIM: outer wall non-imbricate, CA: grill, DETAILS: ca_disjunct,
MetricsLith size: 1->3.5µm; Coccosphere size: 3->13µm;
Sources:
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: Total of range of species in this database
First occurrence (base): at base of Gelasian Stage (0% up, 2.6Ma, in Gelasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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


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SY molischii gp compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-11-2019

Taxon Search:
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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1331 Go to Archive.is to create a permanent copy of this page - citation notes



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