| 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:
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
| Tags | LITHS: murolith, elliptical, RIM: outer wall non-imbricate, rim-narrow, CA: process, PROCESS: flaring, spine, CSPH: ovoid, spherical, equant, elongated, BC-dimorphic, EqC, EqC+process, polymorphic, DETAILS: ca_disjunct, |
| Metrics | Lith size: 0.5->1µm; Sources: |
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:
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, Proceedings of the 4th INA Conference, Prague 1991, vol II. Knihovnicka ZPN. 14b: 305-325. gs :: view :: open Thomsen, H. A. & Ostergaard, J. B. (2015). Coccolithophorids in Polar Waters: Mercedesia gen. nov., Ericiolus, Quaternariella and Porsildia gen. nov. Acta Protozoologica. 54: 155-169. gs :: :: References:
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Vexillarius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-7-2020
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