pforams@mikrotax - Clavihedbergella simplicissima

Clavihedbergella simplicissima


Classification: pf_mesozoic -> Hedbergellidae -> Clavihedbergella -> Clavihedbergella simplicissima
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 simplicissima (Magne and Sigal, 1954)
Rank: Species
Basionym: Hastigerinella simplicissima

Type images:

Original description: Translated from French. "Diagnosis. - A species characterized by a slight elongation of the chambers, indeed placing this form between two genera, Globigerina and Hastigerinella. "Description: - Test with a globigerinid mode of coiling. The chambers, numbering 5 in the last whorl, are strongly inflated, not compressed and slightly elongate in a radial direction; they are often shifted with regard to a plane perpendicular to the coiling axis. The aperture is protected by an umbilical lip.

Entries in the Catalog of original descriptions: Hastigerinella simplicissima


Emended description:


Morphology:

Wall type:

Size:

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:aperture:Umbilical-extraumbilical
sp chamber shape:Elongatecoiling axis:Lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Elongateumbilicus:Narrowperiph margin shape:Moderately roundedaccessory apertures:Relict
spiral sutures:Strongly depressedumb depth:Shallowwall texture:Finely pustuloseshell porosity:
umbilical or test sutures:Strongly depressedfinal-whorl chambers:4.5-5.5 N.B. These characters are used for advanced search. N/A - not applicable

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 Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian–Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. gs

Magne, J. & Sigal, J. (1954). Description des especes nouvelles; 1 - Foraminiferes. In, Cheylan, G., Magne, J., Sigal, J. & Grekoff, N. (eds) Resultats geologiques et micropaleontologiques du sondage d' El Krachem (Hauts Plateaux algerois). Bulletin de la Société Géologique de France . 3(4-6): 471-492. gs

Petrizzo, M. R. & Huber, B. T. (2006). Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean). Journal of Foraminiferal Research. 36: 166-190. gs


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Clavihedbergella simplicissima compiled by the pforams@mikrotax project team viewed: 30-11-2022

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110048 Go to Archive.is to create a permanent copy of this page - citation notes



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