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Globotruncana falsostuarti


Classification: pf_mesozoic -> Globotruncanidae -> Globotruncana -> Globotruncana falsostuarti
Sister taxa: G. aegyptiaca, G. arca, G. bulloides, G. dupeublei, G. esnehensis, G. falsostuarti, G. hilli, G. lapparenti, G. linneiana, G. mariei, G. neotricarinata, G. orientalis, G. rosetta, G. rugosa, G. ventricosa, G. sp.,

Taxonomy

Citation: Globotruncana falsostuarti Sigal 1952
Rank: Species
Basionym: Globotruncana falsostuarti

Type images:

Original description: dont on peut se demander si c'est une G. stuarti à test biconvexe ou plus vraisemblablement une G. rosetta différenciée par la forme, la taille et le nombre des loges.

Translated from French: One may wonder whether this species is a Globotruncana stuarti (de Lapparent) [Rosalina stuarti, 1918] with a biconvex test or more likely a Globotruncana rosetta (Carsey) [Globigerina rosetta, 1926] but differing by its shape, its size and the number of chambers.

Entries in the Catalog of original descriptions: Globotruncana falsostuarti


Emended description: by Dupeuble, 1969. Translated from French: Biconvex form, single keeled, the spiral side being slightly convex. Seven to eight chambers in the last whorl. Petaloid-shaped chambers as in Globotruncana arca. Lobate periphery. Umbilical side displaying a broad and fairly deep umbilicus. The sutural ridge of the chambers does not quite reach the keel. On the first chambers of the umbilical side, one may find a remnant of a second keel in the shape of a backward-oriented and parallel to the periphery bend of the sutural ridge. [copied from Chronos database]

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.30-69.18Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. ventricosa zone (76.18-79.20Ma, base in Campanian 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

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Globotruncana falsostuarti, synonyms included - Globotruncana falsostuarti;
  • space-time plot :: Samples map :: Parent: Globotruncana

    Character matrix

    test outline:Lobatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical
    sp chamber shape:Petaloidcoiling axis:Moderateperiphery:Double keelaperture border:Tegilla
    umb chbr shape:Trapezoidalumbilicus:Wideperiph margin shape:Subangularaccessory apertures:Intralaminal
    spiral sutures:Raised beadedumb depth:Deepwall texture:Finely pustuloseshell porosity:Finely Perforate: 1-2.5µm
    umbilical or test sutures:Raised beadedfinal-whorl chambers:7.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Almogi-Labin, A., Reiss, Z & Caron, M. (1986). Senonian globotruncanidae from Israel. Eclogae Geologicae Helvetiae. 79(3): 849-895. gs

    Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs

    Robaszynski, F., Caron, M., Gonzales Donoso, J. M., Wonders, A. A. H. & the European Working Group on Planktonic Foraminifera (1984). Atlas of Late Cretaceous globotruncanids. Revue de Micropaléontologie. 26(03-Apr): 145-305. gs

    Sigal, J. (1952). Apercu stratigraphique sur la micropaleontologie du Cretace. XIX Congr. géol. internat., Algers, Monographies Regionales. 1(26): 3-43. gs


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    Globotruncana falsostuarti compiled by the pforams@mikrotax project team viewed: 17-10-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110160 Go to Archive.is to create a permanent copy of this page - citation notes



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