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Dicarinella primitiva


Classification: pf_mesozoic -> Globotruncanidae -> Dicarinella -> Dicarinella primitiva
Sister taxa: D. asymetrica, D. bouldinensis, D. canaliculata, D. concavata, D. hagni, D. imbricata, D. longoriai, D. marianosi, D. primitiva, D. roddai, D. takayanagii, D. sp.,

Taxonomy

Citation: Dicarinella primitiva (Dalbiez, 1955)
Rank: Species
Basionym: Globotruncana ventricosa primitiva
Synonyms: Globotruncana kuepperi

Type images:

Original description: Test of medium size, periphery slightly to distinctly lobate with one double keel or two very close keels. Spiral side flat to very slightly concave; sutures curved, limbate; generally 6 chambers in the last whorl, increasing regularly. Umbilical side with wide umbilicus; generally 6 moderately inflated chambers visible. 

Entries in the Catalog of original descriptions: Globotruncana (Globotruncana) ventricosa primitiva, Globotruncana kuepperi

Geological Range:
Last occurrence (top): within D. asymetrica zone (84.19-86.71Ma, top in Santonian stage). Data source: [copied from Chronos database]
First occurrence (base): within M. schneegansi zone (89.91-92.56Ma, base in Turonian 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: Dicarinella primitiva, synonyms included - Dicarinella kupperi; Dicarinella primitiva; Globotruncana concavata primitiva; Globotruncana kupperi; Globotruncana primitiva;
  • space-time plot :: Samples map :: Parent: Dicarinella

    Character matrix

    test outline:Subcircularchamber arrangement:Trochospiraledge view:Planoconvexaperture:-
    sp chamber shape:Petaloidcoiling axis:Low-moderateperiphery:Double keelaperture border:Thin porticus
    umb chbr shape:Trapezoidalumbilicus:Wideperiph margin shape:Subangularaccessory apertures:None
    spiral sutures:Raised beadedumb depth:Deepwall texture:Finely pustuloseshell porosity:-
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:5.0-6.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Dalbiez, F. (1955). The genus Globotruncana in Tunisia. Micropaleontology. 1(2): 161-171. gs

    Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs


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    Dicarinella primitiva compiled by the pforams@mikrotax project team viewed: 22-10-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110094 Go to Archive.is to create a permanent copy of this page - citation notes



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