Nannotax3 - ntax_cenozoic - Solisphaera palmula Nannotax3 - ntax_cenozoic - Solisphaera palmula

Solisphaera palmula


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Solisphaera -> Solisphaera palmula
Sister taxa: S. blagnacensis, S. emidasia, S. helianthiformis, S. galbula, S. turbinella ⟩⟨ S. tegula, S. palmula ⟩⟨ S. miocaenica, D. moori, S. sp.

Taxonomy:

Citation: Solisphaera palmula Bown 2016
taxonomic rank: Species

Distinguishing features:
Parent taxon (Solisphaera): Coccoliths without radial lath cycle; coccosphere dome-shaped, polymorphic
This taxon: CCs very small, with trapezoidal protrusions, flat or slightly curved; possible BCs flat (Palaeocene)

Farinacci & Howe catalog pages: S. palmula *


Morphology:

Very small, narrow, flat or slightly curving, tapered-trapezoid processes formed from miniscule, overlapping, elongate elements. The elements are arranged in 15–20 rows that slope from upper left to lower right.
Two simple coccoliths, with very narrow rim, central plate and no process, are associated with a group of specimens that may be a collapsed coccosphere; these may represent polymorphic coccoliths similar to those seen in extant species of Solisphaera.
Differentiation: See the discussion of comparisons with extant species for S. tegula. Solisphaera palmula is smaller, narrower and more elongate than S. tegula. [Bown 2016]

Size:
length 1.6–2.2μm; width 0.8–1.1μm [Bown 2016]

Search data:
LITHS: planolith, elliptical, CA: ca_disjunct, process,
Lith size: 1.5->2.5µm;
Data source notes: lith size from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP6 zone (58.97-59.54Ma, top in Thanetian stage). Data source: Bown 2016
First occurrence (base): within NP5 zone (59.54-61.51Ma, base in Selandian stage). Data source: Bown 2016]

Plot of occurrence data:

References:

Bown, P. R. (2016). Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32. gs O


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Solisphaera palmula compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-12-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1258 Go to Archive.is to create a permanent copy of this page - citation notes
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