Staurolithites angustus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites angustus
Sister taxa: << < S. halfanii, S. minutus, 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: Large (~7 µm), Staurolithites species with bars rotated 10-20° from axial; the bars of this cross are split along their length and flare towards their juncture with the rim.


Taxonomy:

Citation: Staurolithites angustus (Stover, 1966) Crux, 1991
Rank: Species
Basionym: Zygolithus angustus Stover, 1966
Synonyms:

Farinacci & Howe catalog pages: Zygolithus angustus *

Distinguishing features: Large (~7 µm), Staurolithites species with bars rotated 10-20° from axial; the bars of this cross are split along their length and flare towards their juncture with the rim.


Morphology remarks: Differentiated from the Eiffellithus species-complex, and E. monechiae in partiular, by its narrower, bright inner cycle that is approximately the same width as the outer cycle, also crossbar structure is simpler.

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, process, diagonal cross, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 8->12µm;
Sources: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

See also: Eiffellithus monechiae - a similar species;

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: Burnett 1998
First occurrence (base): within NC9b subzone (103.13-107.59Ma, base in Albian stage). Data source: Bown 2001

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: Staurolithites angustus, synonyms included - Staurolithites angustus; Vagalapilla angusta; Vekshinella angusta;
  • space-time plot :: Samples map :: Parent: Staurolithites

    References:

    Applegate, J. L. & Bergen, J. A. (1988). Cretaceous calcareous nannofossil biostratigraphy of sediments recovered from the Galicia Margin, ODP Leg 103. Proceedings of the Ocean Drilling Program. Scientific Results. 103: 293-348. gs

    Bown, P. R. (2001). Calcareous nannofossils of the Gault, Upper Greensand and Glauconitic Marl (Middle Albian-Lower Cenomanian) from the BGS Selborne boreholes, Hampshire. Proceedings of the Geologists' Association. 112: 223-236. gs

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

    Crux, J. A. (1991a). Albian calcareous nannofossils from the Gault Clay of Munday’s Hill (Bedfordshire, England). Journal of Micropalaeontology. 10(203-221): -. gs

    Hill, M. E. & Bralower, T. J. (1987). Early evolution, stratigraphy and taxonomy of Eiffellithus eximius and closely-related species. In, Stradner, H. , & Perch Nielsen, K, (eds) Proceedings of the INA Meeting, Vienna 1985. Abhandlungen der Geologischen Bundesanstalt. 39: 89-97. gs

    Jeremiah, J. (1996). A proposed Albian to Lower Cenomanian nannofossil biozonation for England and the North Sea Basin. Journal of Micropalaeontology. 15(97-129): -. gs

    Stover, L. E. (1966). Cretaceous coccoliths and associated nannofossils from France and the Netherlands. Micropaleontology. 12: 133-167. gs

    Watkins, D. K. & Bergen, J. A. (2003). Late Albian adaptive radiation in the calcareous nannofossil genus Eiffelithus. Micropaleontology. 49(3): 231-252. gs

    Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs


    nannotaxlogo400px

    Staurolithites angustus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-4-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11112 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