pforams@mikrotax - Globotruncanella pforams@mikrotax - Globotruncanella


Classification: pf_mesozoic -> Globotruncanidae -> Globotruncanella
Sister taxa: Abathomphalus, Contusotruncana, Dicarinella, Gansserina, Globotruncana, Globotruncanella, Globotruncanita, Loeblichella, Marginotruncana, Radotruncana
Daughter taxa (time control age-window is: 0-800Ma)
Globotruncanella compressiformis

Globotruncanella havanensis

Globotruncanella minuta

Globotruncanella petaloidea

Globotruncanella pschadae

Globotruncanella semsalensis

Globotruncanella sp.
Specimens which cannot be assigned to established species


Citation: Globotruncanella Reiss 1957
taxonomic rank: Genus
Type species: Globotruncana citae Bolli, 1951 = Globotruncana havanensis Voorwijk, 1937

Original description: Test flatly trochospiral; chambers flat, slightly inflated; peripheral margin subacute to acute, imperforate, provided with an undifferentiated keel; keel pustulose to spinose, never showing tendencies to split into two keels, forming dorso-septal branches only, which are usually weak; ventro-septal branches and periumbilical extensions absent; cameral aperture interiomarginal-umbilical; lips fairly long, slightly arched lengthwise, covering partly the small umbili- cus. Ceriomanian to Maestrichtian.

Entries in the Catalog of original descriptions: Globotruncanella

Distinguishing features:
Parent taxon (Globotruncanidae): Test trochospiral, chambers angular, periphery truncate or carinate; primary aperture umbilical, covered by a spiral system of tegilla that is provided with accessory intralaminal and infralaminal apertures.
This taxon: Test a low trochospiral, planoconvex to concavoconvex, compressed, chambers petaloid, about five in the final whorl, sutures radial, depressed, umbilicus of narrow to medium size, periphery acutely angled, with nonperforate carinal band or true keel, peripheral outline lobulate; wall calcareous, perforate, with pustulose suface and peripheral keel; primary aperture interiomarginal, extraumbilical-umbilical, in early chambers provided with a small triangular porticus, later with a distinct tegillum crossing the umbilicus, and with accessory apertures around the margins.

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within G. ventricosa zone (76.18-79.20Ma, base in Campanian stage). Data source: Total of ranges of species in this database

Plot of range and occurrence data:


Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gs


Globotruncanella compiled by the pforams@mikrotax project team viewed: 17-7-2024

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