Staurolithites dibrachiatus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Staurolithites -> Staurolithites dibrachiatus
Sister taxa: S. crux, S. dibrachiatus, S. stradneri, S. dentatus, S. eiffellithoides, S. flavus, S. halfanii, S. minutus, S. ngurumahambaensis, S. quadriarcullus, S. siesseri, S. coroniformis, S. gausorhethium, S. leptostaurus, S. dorfii, S. handleyi, S. imbricatus, > >>

Distinguishing features:

Unicyclic rim and broad, medianly split, cross-bars.


Taxonomy:

Citation: Staurolithites dibrachiatus (Gartner, 1968) Young & Bown 2014
Rank: Species
Basionym: Vekshinella dibrachiata Gartner, 1968
Synonyms:
Notes & discussion: The name dibrachiatus was based on a medium sized (5µm) Late Cretaceous form. Grun & Zweili (1980) used  it for a small  Jurassic form (3-4 µm) but these can better be placed in S. stradneri.

Farinacci & Howe catalog pages: Vekshinella dibrachiata *

Distinguishing features:

Unicyclic rim and broad, medianly split, cross-bars.

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, process, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 5->7┬Ám;
Sources: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: A poorly defined species which has been recorded from a wide stratigraphic range
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: specimens illustrated here by Wind & Wise 1977
First occurrence (base): within Campanian Stage (72.05-83.64Ma, base in Campanian stage). Data source: original descripition

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:

    Gartner, S. (1968). Coccoliths and related calcareous nannofossils from Upper Cretaceous deposits of Texas and Arkansas. The University of Kansas Paleontological Contributions. Article 48 (Protista 1): 1-56. gs

    Rahman, A. & Roth, P. H. (1991). Upper Jurassic calcareous nannofossils from the DSDP Site 534 in the Blake Bahama Basin, western North Atlantic. Eclogae Geologicae Helvetiae. 84: 765-789. gs

    Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs

    Young, J. R. & Bown, P. R. (2014). Some emendments to calcareous nannoplankton taxonomy. Journal of Nannoplankton Research. 33(1): 39-46. gs


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    Staurolithites dibrachiatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 31-3-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11116 Go to Archive.is to create a permanent copy of this page - citation notes



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