Nannotax3 - Coccolithophores

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)
				Vexillarius acerviphora Process narrow, weakly tapering; c-area with axial plate.
				Vexillarius cancellifer Process flaring distally.
				Vexillarius cereus Process spine-like, tapering.
				Vexillarius iaculifer Process lozenge-shaped; maximum width about half-way up process.
				Vexillarius sp. Specimens which cannot be assigned to established species

Taxonomy:

Citation: Vexillarius Jordan & Chamberlain, 1993

Rank: Genus

Type species: Vexillarius cancellifer Jordan & Chamberlain, 1993

Synonyms:

Porsildia Thomsen & Ostergaard 2015 (according to Andruleit & Jordan 2017)

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:

Tags	LITHS: murolith, elliptical, RIM: outer wall non-imbricate, rim-narrow, PROCESS: flaring, hollow, spine, CSPH: ovoid, spherical, EqC, EqC+process, polymorphic, DETAILS: ca_disjunct,
Metrics	Lith size: 0.5->1µm; 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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Papposphaeraceae

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

Vexillarius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-12-2019

Taxon Search:

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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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