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Liuenella globigerinellinoides


Classification: pf_mesozoic -> Hedbergellidae -> Liuenella -> Liuenella globigerinellinoides
Sister taxa: L. falklandica, L. globigerinellinoides, L. punctata, Liuenella sp., L. sp.,

Taxonomy

Citation: Liuenella globigerinellinoides (Subbotina, 1949)
Rank: Species
Basionym: Globigerina globigerinellinoides

Type images:

Original description: Shell small, similar in external appearance to Globigerinella aspera (Ehrenberg). Spiral low. Whorls 2.5-3.0.First whorl lies below the outer surface of the second or in the same plane. There are 6-7 chambers, or occasionally 8, to the last whorl. Chambers spherical, noticeably increasing in size and lying closely packed together; they are delimited from each other by almost straight, deep sutures. Peripheral margin rounded, slightly undulate, almost smooth. Umbilicus clearly visible, narrow. Orifices slit-like lying between the umbilicus and the peripheral margin, frequently with lips. Walls smooth.

Entries in the Catalog of original descriptions: Globigerina globigerinellinoides

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: [copied from Chronos database]
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian 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

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

    Character matrix

    test outline:Circularchamber arrangement:Trochospiraledge view:Equally biconvexaperture:Extraumbilical
    sp chamber shape:-coiling axis:Very lowperiphery:N/Aaperture border:Thin lip
    umb chbr shape:-umbilicus:Narrowperiph margin shape:Moderately roundedaccessory apertures:None
    spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:-
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:6.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Georgescu, M. D. (2010a). Liuenella, new name for Liuella Georgescu, 2008. Journal of Foraminiferal Research. 40: 206-. gs

    Sigal, J. (1979). Chronostratigraphy and ecostratigraphy of Cretaceous formations recovered on DSDP Leg 47B, Site 398. Initial Reports of the Deep Sea Drilling Project. 47(2): 287-326. gs

    Subbotina, N. N. (1949). Микрофауна меловых отложений южного склона Кавказа [Microfauna from the Cretaceous of the southern slope of the Caucasus]. VNIGRI, Microfauna of the oil fields of the USSR. 2. 34: 5-36. gs


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    Liuenella globigerinellinoides compiled by the pforams@mikrotax project team viewed: 8-12-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110317 Go to Archive.is to create a permanent copy of this page - citation notes



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