Catalog - Alloglobigerinoides Catalog - Alloglobigerinoides

CATALOG OF ORIGINAL DESCRIPTIONS: Alloglobigerinoides Huang 1986

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: pf_cat -> A -> Alloglobigerinoides
Other pages this level: Abathomphaloidea, Abathomphalus, Acarinina, Alanlordella, Alicantina, Alloglobigerinoides, Anaticinella, Anomalina, Archaeoglobigerina, Archaeoglobitruncana, Archaeoguembelitria, Aristerospira, Ascoliella, Astrorotalia, Asymetria


Citation: Alloglobigerinoides Huang 1986
taxonomic rank: Genus
Type species: Globigerina conglobata Brady 1879

Current identification/main database link: Globigerinoides Cushman 1927, emend Spezzaferri et al. 2015

Original Description

Test free. trochospiral; chambers globular to ovate; sutures depressed. radial; wall calcareous, coarsely perforate, hispid or spinose; primary aperture interiomarginal, umbilical, as in Globigerina, umbilical aperture covered by the final chamber of the adult, which has smaller econdary apertures around its lower margin above the single intercameral suture; wall of last formed umbilical chamber is similar in structure to the primary wall coarsely perforated; small secondary sutural apertures on the spiral side, as in Globigerinoides which may not be covered by sutural bullae.

Extra details from original publication
Remarks. - Alloglobigerinoides, new genus morphologically resembles Globigerinoita Bronnimann, 1952, in having Globigerinoides test and umbi lical chamber but d iffers in lacking the sutural bullae covering the seconda ry apertures of spiral side. In Alloglobigerinoides the early stage is similar to Globigerina d'Orbigny and later to

-type test with umbilical chamber.

Alloglobigerinoides differs from Globigerinoides Cushman in the absence of an umbilical primary aperture in the last ontogenetic stage which covered by the last formed umbilical chamber. The umbilical chamber has smaller sutural secondary apertures and as a rule placed symmetrically above the single intercameral suture (pl. 2, fig. 3; see Huang. 1986), which may not be covered by bullae.

The relationship between the new genus Alloglobigerinoides and the genus Globigerinoita Bronnimann, 1952, is as similar as between non-bullate form Globigerapsis and bullate form Globigerinatheka Bronnimann. 1952. The genus Globigerapsis is similar to Globigerinatheka but has no bullae covering the sutural aperture (Bolli, 1972).

Based on the present observation and literature, the forms previously referred to Globigerinoides conglobatus ( Brady) should, in this study, be excluded from Globigerinoides and are now referred to the new genus Alloglobigerinoides.

On the other hand, Globigerinoides  gomitulus (Seguenza) may belong to the present genus, and seems closer to the species Alloglobigerinoides conglobatus (Brady).

Editors' Notes
The type species was cited in the original publication as Alloglobigerinoides conglobatus (Brady). So the genus was explicitly treated as masculine in the original publication.

Opinion of Brummer & Kucera 2022
A monotypic genus erected by Huang (1986) to account for a presumed absence of an umbilical primary aperture on the final chamber in the type species. Whilst there are specimens where the final chamber does obscure the aperture, there are also many specimens where the primary aperture is visible, making the diagnostic character of the genus obsolete in lieu of Globigerinoides.


Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs

Huang, T. (1986). Alloglobigerinoides, a new planktic foraminiferal genus. Petroleum Geology of Taiwan. 22: 93-102. gs


Alloglobigerinoides compiled by the pforams@mikrotax project team viewed: 23-4-2024

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