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Clavihedbergella moulladei


Classification: pf_mesozoic -> Hedbergellidae -> Clavihedbergella -> Clavihedbergella moulladei
Sister taxa: C. amabilis, C. eocretacea, C. leckiei, C. moremani, C. moulladei, C. pauliani, C. simplex, C. simplicissima, C. subcretacea, C. subdigitata, C. sp.,

Taxonomy

Citation: Clavihedbergella moulladei (Longoria, 1974)
Rank: Species
Basionym: Loeblichella moulladei

Type images:

Original description: Small, biconvex; test as with genus; formed by about three whorls; peripheral margin elliptical, lobate; five to six chambers in the last whorl, increasing gradually in size as added; first two chambers on spiral side ovoid, final chambers subrectangular; first chambers spherical to ovoid on umbilical side, final chambers crenulate; ovoid in peripheral view; sutures radially curved in the first two chambers, straight on final chambers; primary aperture a low arch, extraumbilical-spiroumbilical in position, bordered by an imperforate flap; umbilicus narrow; surface of the test smooth. Loeblichella moulladei is common in the material observed; more than 50 specimens were analyzed. L. moulladei displays little variation. The number of chambers in the last whorl varies from five to six. Relict apertures are often observed on the umbilical side; specimens with spiral relict apertures were not seen.

Entries in the Catalog of original descriptions: Loeblichella moulladei

Geological Range:
Last occurrence (top): within Aptian Stage (112.95-126.30Ma, top in Aptian stage). Data source: [copied from Chronos database]
First occurrence (base): within Aptian Stage (112.95-126.30Ma, base in Aptian 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: Clavihedbergella

    Character matrix

    test outline:Lobatechamber arrangement:Planispiraledge view:aperture:Extraumbilical
    sp chamber shape:coiling axis:periphery:aperture border:
    umb chbr shape:umbilicus:Narrowperiph margin shape:accessory apertures:
    spiral sutures:Moderately depressedumb depth:wall texture:Smoothshell 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:

    Longoria, J. F. (1974). Stratigraphic, morphologic and taxonomic studies of Aptian planktonic foraminifera. Revista Española de Micropaleontología. Numero Extraordinario: 5-107. gs


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    Clavihedbergella moulladei compiled by the pforams@mikrotax project team viewed: 20-8-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110045 Go to Archive.is to create a permanent copy of this page - citation notes



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