Vexillarius


Classification: Coccolithophores -> Coccolith families inc sed -> Papposphaeraceae -> Vexillarius
Sister taxa: Balaniger, Formonsella, Kataspinifera, Pappomonas, Papposphaera, Picarola, Pocillithus, Pseudowigwamma, Quaternariella, Ventimolina, Vexillarius, Wigwamma,

Daughter taxa: (blue => in age window 0-800Ma)
Process narrow, weakly tapering; c-area with axial plate.
Process flaring distally.
Process spine-like, tapering.
Process lozenge-shaped; maximum width about half-way up process.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Vexillarius Jordan & Chamberlain, 1993
Rank: Genus
Type species: Vexillarius cancellifer Jordan & Chamberlain, 1993
Synonyms:

Distinguishing features: Coccoliths narrow-rimmed muroliths; equatorial coccoliths with quadrate central process supported by transverse bar.
Coccosphere dimorphic, equatorial coccoliths distinctive, BCs simple muroliths

Farinacci & Howe catalog pages: Vexillarius


Morphology remarks: Process is capped by a quadrate structure formed of four laths. Detailed description is given by Jordan & Chamberlain (1992) and species are discussed in  Andruleit & Jordan 2017

Search data:
TagsLITHS: murolith, elliptical, RIM: outer wall non-imbricate, rim-narrow, PROCESS: flaring, hollow, spine,
CSPH: ovoid, spherical, EqC, EqC+process, polymorphic, DETAILS: ca_disjunct,
MetricsLith size: 0.5->1┬Ám;
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 top of No known fossil record modern (100% up, 0Ma, in stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Andruleit, A. & Jordan, R. W. (2016). Further observations on Vexillarius cancellifer Jordan & Chamberlain. Revue de Micropaleontologie. 59: 227-231. gs

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

Jordan, R. W. & Chamberlain, A. H. L. (1992). Vexillarius cancellifer gen. et sp. nov., and its possible affinities with other living coccolithophorids. In, Hamrsmid, B. & Young, J. R. (eds) Nannoplankton Research (Procs INA Conf). Knihovnicka ZPN. 14a, 1: 305-325. gs

Thomsen, H. A. & Ostergaard, J. B. (2015a). Coccolithophorids in Polar Waters: Mercedesia gen. nov., Ericiolus, Quaternariella and Porsildia gen. nov. Acta Protozoologica. 54: 155-169. gs


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Vexillarius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-8-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1485 Go to Archive.is to create a permanent copy of this page - citation notes



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