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Whiteinella brittonensis


Classification: pf_mesozoic -> Hedbergellidae -> Whiteinella -> Whiteinella brittonensis
Sister taxa: W. aprica, W. archaeocretacea, W. aumalensis, W. baltica, W. bornholmensis, W. brittonensis, W. inornata, W. paradubia, W. sp.,

Taxonomy

Citation: Whiteinella brittonensis (Loeblich and Tappan, 1961)
Rank: Species
Basionym: Hedbergella brittonensis

Type images:

Original description: "Test free, in a medium to high trochospiral coil of two and one-half to three volutions, all visible on the elevated spiral side, only the five to six or rarely seven chambers of the final whorl visible around the deep and broad umbilicus of the opposite side; chambers increasing gradually in size; sutures distinct, deeply constricted, radial to gently curved; wall calcareous, distinctly perforate, surface promionently spinose; aperture an arch opening into the umbilicus and bordered by a distinct lip, with the lips of earlier chambers occasionally preserved around the umbilicus. Greatest diameter of holotype 0.37 mm., thickness 0.33 mm. Paratypes range from 0.34 to 0.49 mm. in diameter.

Entries in the Catalog of original descriptions: Hedbergella brittonensis

Geological Range:
Last occurrence (top): within H. helvetica zone (92.56-93.52Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within W. archaeocretacea zone (93.52-94.03Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

  • 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: Whiteinella brittonensis, synonyms included - Hedbergella brittonensis; Whiteinella brittonensis; space-time plot :: Samples map :: Parent: Whiteinella

    Character matrix

    test outline:Circularchamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical-extraumbilical
    sp chamber shape:Globularcoiling axis:Moderate-highperiphery:N/Aaperture border:Thin lip
    umb chbr shape:Globularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:None
    spiral sutures:Strongly depressedumb depth:Deepwall texture:Moderately muricateshell porosity:
    umbilical or test sutures:Strongly depressedfinal-whorl chambers:5.0-6.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Loeblich, A. R. & Tappan, H. (1961). Cretaceous planktonic foraminifera: Part I-Cenomanian. Micropaleontology. 7: 257-304. gs


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    Whiteinella brittonensis compiled by the pforams@mikrotax project team viewed: 25-8-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110577 Go to Archive.is to create a permanent copy of this page - citation notes



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