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Pseudoguembelina kempensis


Classification: pf_mesozoic -> Heterohelicidae -> Pseudoguembelina -> Pseudoguembelina kempensis
Sister taxa: P. costellifera, P. costulata, P. excolata, P. hariaensis, P. kempensis, P. palpebra, P. semicostata, P. sp.,

Taxonomy

Citation: Pseudoguembelina kempensis Esker 1968
Rank: Species
Basionym: Pseudoguembelina kempensis

Type images:

Original description: Test rapidly flaring in the juvenile part, sides subparallel in the adult. Chambers pinched along the edge, giving an acute to keeled periphery. In the adult, the periphery may become more rounded. Surface covered by discontinuous costae; sutures depressed. Last 2 to 4 chambers with accessory apertures with a short tube-like extension, directed to the median suture.

Entries in the Catalog of original descriptions: Pseudoguembelina kempensis

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.30-69.18Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. gansseri zone (71.75-72.97Ma, base in Campanian 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: Pseudoguembelina kempensis, synonyms included - Pseudoguembelina kempensis; space-time plot :: Samples map :: Parent: Pseudoguembelina

    Character matrix

    test outline:Subtriangularchamber arrangement:Biserialedge view:Compressedaperture:Interiomarginal
    sp chamber shape:Subrectangularcoiling axis:N/Aperiphery:Single keelaperture border:Thin flange
    umb chbr shape:Subrectangularumbilicus:N/Aperiph margin shape:Subangularaccessory apertures:Sutural
    spiral sutures:Moderately depressedumb depth:N/Awall texture:Coarsely costateshell porosity:
    umbilical or test sutures:Strongly depressedfinal-whorl chambers:2.0-2.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Esker, G. C. (1968). A new species of Pseudoguembelina from the Upper Cretaceous of Texas. Contributions from the Cushman Foundation for Foraminiferal Research. 19(4): 168-169. gs


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    Pseudoguembelina kempensis compiled by the pforams@mikrotax project team viewed: 18-8-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110454 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (1)

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    Le Coze

    Ref.: "Contribution from the Cushman Foundation for foraminiferal research" not "Contributions from the Cushman Laboratory for Foraminiferal Research"

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    Jeremy Young (UK)

    good point - I'll check the other Cushman references for this (the changeover was in 1950).

    Page 1 of 1
     

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