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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: Loeblichella moulladei Longoria 1974: 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:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

Character matrix

test outline:Lobatechamber arrangement:Planispiraledge view:aperture:Extraumbilical
umb chamber shape:coiling axis:periphery:aperture border:
sp chbr shape:umbilicus:Narrowperiph margin shape:accessory apertures:
umbilical or test sutures:Moderately depressedumb depth:wall texture:Smoothshell porosity:
spiral sutures:Moderately depresseddiameter mm:0.154width mm:breadth mm:
final-whorl chambers:5.0-6.0

References:

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


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Clavihedbergella moulladei compiled by the pforams@mikrotax project team viewed: 26-9-2017

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AphiaID: 1035377 Nomenclatural data on WoRMS
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