pforams@mikrotax - Globotruncana ventricosa pforams@mikrotax - Globotruncana ventricosa

Globotruncana ventricosa


Classification: pf_mesozoic -> Globotruncanidae -> Globotruncana -> Globotruncana ventricosa
Sister taxa: G. aegyptiaca, G. arca, G. bulloides, G. dalbiezi, 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 ventricosa (White, 1928)
Taxonomic rank: species
Basionym: Globotruncana canaliculata ventricosa
Synonyms: Globotruncana lobata

Type images:

Original description: "This form is similar to the preceding G. canaliculata (Reuss) description except that the ventral side is convex instead of flat. Diameter of type specimen, 0.6 mm; thickness, 0.25 mm."

Entries in the Catalog of original descriptions: Globotruncana canaliculata ventricosa, Globotruncana lobata

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Planoconvexaperture:Umbilical
sp chamber shape:Petaloidcoiling axis:Lowperiphery:Double keelaperture border:Tegilla
umb chbr shape:Inflatedumbilicus:Wideperiph margin shape:Subangularaccessory apertures:Intralaminal
spiral sutures:Raised beadedumb depth:Deepwall texture:Finely pustuloseshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:5-9 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, 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 range and occurrence data:

References:

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

Pessagno, E. A. (1967). Upper Cretaceous planktonic foraminifera from the western Gulf Coastal Plain. Palaeontographica Americana. 5: 245-445. gs O

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(3-4): 145-305. gs

White, M. P. (1928). Some Index Foraminifera of the Tampico Embayment Area of Mexico. Journal of Paleontology. 2(3): 177-215. gs


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Globotruncana ventricosa compiled by the pforams@mikrotax project team viewed: 16-2-2025

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