Staurolithites zoensis


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites zoensis
Sister taxa: << < S. ngurumahambaensis, S. quadriarcullus, S. siesseri, S. coroniformis, S. gausorhethium, S. leptostaurus, S. dorfii, S. handleyi, S. imbricatus, S. laffittei, S. lumina, S. mielnicensis, S. mitcheneri, S. angustus, S. mutterlosei, S. zoensis, S. aachenus, S. aenigma, S. dicandidula, S. ellipticus, S. elongatus, S. integer, S. parma, S. sp.,

Distinguishing features: Medium sized (6-7 µm), bicyclic, axial cross slightly twisted.


Taxonomy:

Citation: Staurolithites zoensis Burnett, 1997
Rank: Species

Farinacci & Howe catalog pages: Staurolithites zoensis *

Distinguishing features: Medium sized (6-7 µm), bicyclic, axial cross slightly twisted.


Morphology remarks: A medium-sized, slightly elongated species of Staurolithites in which the inner rim-cycle and thin, axial cross are highly birefringent. The inner and outer rims are similarly narrow. The bars of the axial cross bend slightly at the junction with the rim. A spine-base is apparent.
The species is differentiated from other species of Staurolithites by the bicyclic rim, and the way in which the highly birefringent axial cross twists slightly where it attaches to the rim. [Burnett 1997]

Size: Holotype dimensions : 6.5 µm long, 4.8 µm wide. (Other illustrations:6.1-6.7 µm long)

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, process, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 5->7µm;
Sources: original description & 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 Late Maastrichtian Substage (66.04-69.91Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Santonian Stage (83.64-86.26Ma, base in Santonian stage). Data source: Burnett 1998

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Staurolithites

    References:

    Burnett, J. A. (1997). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. gs :: view :: open

    Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs :: ::

    Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs :: view :: open

    Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs :: view :: open


    nannotaxlogo400px

    Staurolithites zoensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-7-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11143 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet on this page. Please do add comments if you spot any problems, or have information to share

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics