pforams@mikrotax - Globotruncana pforams@mikrotax - Globotruncana


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

Globotruncana arca

Globotruncana bulloides

Globotruncana dalbiezi

Globotruncana dupeublei

Globotruncana esnehensis

Globotruncana falsostuarti

Globotruncana hilli

Globotruncana lapparenti

Globotruncana linneiana

Globotruncana mariei

Globotruncana neotricarinata

Globotruncana orientalis

Globotruncana rosetta

Globotruncana rugosa

Globotruncana ventricosa

Globotruncana sp.
Specimens which cannot be assigned to established species


Citation: Globotruncana Cushman 1927
taxonomic rank: Genus
Type species: Pulvinulina arca Cushman, 1926

Original description: Test trochoid, the adult usually much compressed, the dorsal and ventral sides either flat or convex, ventral s ide sometimes slightly concave, the periphery truncate, usually with a double keel on the dorsal and ventral sides; aperntre on the ventral side; apparently pelagic in part.

Entries in the Catalog of original descriptions: Globotruncana, Rosalinella

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 high to low trochospiral, umbilicus occupying from one-fourth to one-half the diameter of the flat to concave umbilical side, peripheral margin truncate and bicarinate, keels separated by an imperforate carinal band, keel on the umbilical side less well developed and may be absent from the final few chambers, peripheral outline entire to lobulate; wall calcareous, finely perforate, surface generally smooth on the spiral side, may be pustulose on the umbilical side, particularly on the earlier chambers, sutures curved to straight, elevated on the spiral side and depressed, flush, or elevated on the umbilical side; primary aperture interiomarginal and umbilical, may be bordered by portici in the early stage, later or always with a system of tegilla that cover most of the umbilicus and have both proximal and distal accessory apertures.

Geological Range:
Last occurrence (top): at top of P. hariaensis zone (100% up, 66.4Ma, in Maastrichtian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within D. asymetrica zone (83.65-85.60Ma, base in Santonian 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


Globotruncana compiled by the pforams@mikrotax project team viewed: 15-7-2024

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Comments (1)

ahmed taha(Haiti)

hi thanks for the information