molischii type


Classification: ntax_cenozoic -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera -> SY molischii gp -> molischii type
Sister taxa: borealis type, halldalii type, molischii type, rotula type

Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Syracosphaera andruleitii


Syracosphaera molischii
BCs robust, rim wide, ornamented

Syracosphaera hastata
BCs narrow smooth rim; CFCs with tall spines

Syracosphaera marginiporata
BCs small, large central plaque and narrow lath cycle, rim narrow smooth

Syracosphaera ossa
BCs with broad smooth rim

Syracosphaera epigrosa
BCs like S. ossa but with central ring of nodes; CFCs like S. ossa, with flattened spine; XCs not known

Taxonomy:

Citation: molischii type Young et al., 2003
Rank: species sub-group

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

Farinacci & Howe catalog pages:


Morphology: The XCs are highly distinctive and are formed of: 1. Asymmetric flange with variably-developed wing like extensions (directed toward and away from apical pole of coccosphere). 2. Conical central area (concave on distal side, convex on proximal side), with horseshoe shaped slits at either end.
Coccospheres are typically small and somewhat flattened/oblate - i.e. wider than long. 

Search data:
TagsLITHS:
MetricsLith size: 1->3.5µm; Coccosphere size: 3->13µm;
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 V O


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molischii type compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 13-6-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=877 Go to Archive.is to create a permanent copy of this page - citation notes



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