Nannotax3 - ntax_cenozoic - Palusphaera bownii Nannotax3 - ntax_cenozoic - Palusphaera bownii

Palusphaera bownii


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Palusphaera -> Palusphaera bownii
Sister taxa: P. vandelii, P. probertii, P. crosiae, P. bownii, P. sp.

Taxonomy:

Citation: Palusphaera bownii Archontikis & Young 2021
Taxonomic rank: species
Taxonomic discussion:

The trumpet-like spines suerpficially resemble those of Discosphaera, but the base lacks a radial cycle and he sine strucutre is different. Instead the spwcies placed in Palusphaera since it is monomorphic (all coccoliths have spines), the radial cycle is missing and the element rows show the same sense of curvature as the other Palusphaera species. [Archontikis & Young 0201]

Distinguishing features:
Parent taxon (Palusphaera): Coccoliths without radial lath cycle; coccospheres monomorphic, all spine-bearing
This taxon: Spines, trumpet-like, low, open and flaring distally

Farinacci & Howe catalog pages: P. bownii *


Morphology:

Palusphaera species with central process short and trumpet like.

Size:
Coccosphere diameter c. 10–15 μm. BCs 1.0–1.5 μm long and wide; rim c. 0.2 μm in width. Spine c. 1.5 μm long and trumpet aperture c. 0.5 μm wide, although few spines tend to bear slightly closer apertures at their outermost part. [Archontikis & Young 2021]

Search data:
LITHS: planolith, elliptical, CA: closed, plate, process,
CSPH: equant, monomorphic,
Lith size: 0->0µm;
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:
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Archontikis, O. A. & Young, J. R. (2021). A reappraisal of the taxonomy and biodiversity of the extant coccolithophore genus Palusphaera (Rhabdosphaeraceae, Prymnesiophyceae). Phycologia. 60: 589-602. gs


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Palusphaera bownii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-2-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1745 Go to Archive.is to create a permanent copy of this page - citation notes
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