Rhabdosphaera vitrea


Classification: Coccolithophores -> Syracosphaerales -> Rhabdosphaeraceae -> Rhabdosphaera -> Rhabdosphaera vitrea
Sister taxa: R. clavigera, R. gracilenta, R. poculii, R. vitrea, R. xiphos, R. sp.,

Taxonomy:

Citation: Rhabdosphaera vitrea (Deflandre in Deflandre & Fert, 1954) Bramlette & Sullivan, 1961
Rank: Species
Basionym: Rhabdolithus vitreus Deflandre in Deflandre & Fert, 1954
Synonyms: Blackites vitreus (Deflandre in Deflandre & Fert, 1954) Shafik, 1981

Distinguishing features: Rhabdoliths with a very narrow styliform spine and four buttress-like structures at the base of the spine, which appear as a collar in LM.

Farinacci & Howe catalog pages: Rhabdolithus vitreus *


Morphology remarks: Rhabdoliths with a very narrow styliform spine that typically has a prominent basal collar. In LM the coccolith is broad and thin, and dominated by the inner cycle, with the outer cycle forming only the outermost edge. SEM images show the four buttress-like structures at the base of the spine, which appear as a collar in LM. It also appears that R. vitrea lacks the radial lath cycle characteristic of Blackites, hence the inclusion within the genus Rhabdosphaera.

Search data:
TagsLITHS: planolith, elliptical, sub-circular, CA: cross, cross-axial, cross-vaulted, process, PROCESS: length-slow, parallel-sided, spine, tall, tiered,
CSPH: not known, R-UNITS: spine, R-prominent, DETAILS: ca_disjunct,
MetricsLith size: 8->12µm;
Sources: lith length from OD & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP23 zone (29.62-32.02Ma, top in Rupelian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP14 zone (46.29-49.11Ma, base in Ypresian stage). Data source: Bown 2005

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Rhabdosphaera vitrea, synonyms included - Rhabdolithus vitrea; Rhabdosphaera vitrea; Rhabdosphaera vitreus;
  • space-time plot :: Samples map :: Parent: Rhabdosphaera

    References:

    Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs

    Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs

    Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(129-188): -. gs

    Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs

    Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

    Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

    Perch-Nielsen, K. (1971b). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter. Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs

    Shafik, S. (1981). Nannofossil biostratigraphy of the Hanktenina (foraminiferid) interval in the Upper Eocene of southern Australia. BMR Journal of Australian Geology & Geophysics. 6: 108-116. gs


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    Rhabdosphaera vitrea compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-4-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1199 Go to Archive.is to create a permanent copy of this page - citation notes



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