nmn

Gorbachikella neilii


Classification: pf_mesozoic -> Praehedbergellidae -> Gorbachikella -> Gorbachikella neilii
Sister taxa: G. depressa, G. grandiapertura, G. kugleri, G. neilii, G. sp.,

Taxonomy

Citation: Gorbachikella neili (Maamouri and Salaj, 1995)
Rank: Species
Basionym: Globuligerina neilii
Taxonomic discussion: Gorbachikella neili differs from the other gorbachikellids taxa by possessing a broad lip bordering the aperture. [copied from Chronos database]

Entries in the Catalog of original descriptions: Globuligerina neilii


Emended description: Test small to medium, trochospirally coiled, globigeriniform; 4 chambers in the outer whorl; chambers globular to subglobular increasing rather slowly and gradually in size as added; sutures depressed, radial, straight to slightly curved; peripheral outline round and lobate; umbilicus rather wide and shallow; dorsal side slightly to strongly convex; aperture umbilical as a high arch, bordered by an extremely developed, imperforate lip; wall calcareous, finely perforate, pores diameter usually comprised between 1 and 2mm; perforations unevenly distributed, widely-spaced and badly-defined in shape. [copied from Chronos database]

Geological Range:
Last occurrence (top): at top of Valanginian Stage (100% up, 133.9Ma, in Valanginian stage). Data source: Mamouri & Salaj 1995 ;
First occurrence (base): in upper part of Valanginian Stage (80% up, 135Ma, in Valanginian stage). Data source: Mamouri & Salaj 1995 ;

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

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Gorbachikella

    Character matrix

    test outline:Lobatechamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
    sp chamber shape:Inflatedcoiling axis:Moderateperiphery:N/Aaperture border:Thick lip
    umb chbr shape:Inflatedumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
    spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:-
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:4.0-4.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Maamouri, A. L. & Salaj, J. (1995). New species of foraminiferal genera Globuligerina Bignot and Guyader, 1971 and Archaeokassabella n. gen. in the latest Valanginian of Tunisia. Zemni Plyn a Nafta. 40: 131-145. gs :: ::


    logo

    Gorbachikella neilii compiled by the pforams@mikrotax project team viewed: 10-8-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/pforams/index.php?id=110209 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