Nannotax3 - ntax_cenozoic - Vexillarius cereus Nannotax3 - ntax_cenozoic - Vexillarius cereus

Vexillarius cereus


Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Vexillarius -> Vexillarius cereus
Sister taxa: V. cancellifer, V. cereus, V. iaculifer, V. sp. 1, V. acerviphora, V. sp.

Taxonomy:

Citation: Vexillarius cereus Andruleit & Jordan 2017
taxonomic rank: Species

Distinguishing features:
Parent taxon (Vexillarius): Coccosphere dimorphic. CFCs (and some dispersed liths) with quadrate central process supported by transverse bar.
BCs open or with concetric/longitudinal bars.

This taxon: Process spine-like, tapering.

Farinacci & Howe catalog pages: V. cereus *


Morphology:

Coccosphere shape unknown, collapsed specimens spherical–subspherical in outline, 5.7–7.2 lm in diameter (excluding processes). Coccosphere dimorphic, monothecate, bearing 50–60 ordinary (body) coccoliths and 19–21 tubular coccoliths. Body coccoliths elliptical, 0.6–1.0 µm x 0.8–1.5 µm, and 0.3–0.6 µm in height, flaring outer wall elements, and inner cycle of much shorter wall elements. Central area apparently open.
Tubular coccoliths identical to body coccoliths, but with central bar across short axis, supporting distally tapering quadrangular process, 1.5–2.6 µm long. Process wall comprising single row of brick-like elements, distally diminishing in size (from 0.2–0.4 µm to 0.1 µm in width), with tip composed of two back-to-back elongate elements (about 0.5 µm long). [from Andruleit & Jordan 2017, slightly edited]


Ecology & Biogeography

Lower photic zone, rare.

Search data:
LITHS: murolith, elliptical, CA: ca_disjunct, vacant, process, closed,
Lith size: 0.8->1.5┬Ám; Liths per sphere: 70->80
Data source notes: original description - lith size=BC length. Csph size excludes processes.
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: Andruleit & Jordan 2017
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Andruleit & Jordan 2017

Plot of occurrence data:

References:

Andruleit, H. & Jordan, R. W. (2017). Two new species of Vexillarius (Prymnesiophyceae) from the eastern Indian Ocean. Phycologia. 56(5): 510-516. gs


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Vexillarius cereus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-3-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1488 Go to Archive.is to create a permanent copy of this page - citation notes
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