CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinoides glomerosa glomerosa Blow 1956

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 -> G -> Globigerinoides -> Globigerinoides glomerosa glomerosa
Other pages this level: << < G. cancellata, G. canimarensis, G. conglobatus altihelix, G. consuelensis, G. diminuta, G. dinapolii, G. elongata bikiniensis, G. elongata cedrosensis, G. emeisi, G. eoconglobatus, G. fournieri, G. fragilis, G. glomerosa, G. glomerosa circularis, G. glomerosa curva, G. glomerosa glomerosa, G. haitiensis anterubra, G. haitiensis compactus, G. haitiensis compressus, G. haitiensis epityche, G. haitiensis praerubra, G. haitiensis progomitulus, G. higginsi, G. hurgadaensis, G. hyalinus, G. index, G. indigena, G. inusitatus, G. italicus, G. japonicus, G. joli> >>

Globigerinoides glomerosa glomerosa

Citation: Globigerinoides glomerosa glomerosa Blow 1956
Rank: sub-species
Type locality: auger line near Pozon, eastern Falcon, Venezuela.
Type age (chronostrat): Siphogenerina transversa zone
Type sample (& lithostrat): sample no. R. M. 19285, T. L. L. Cat. No. 130301, Pozon formation
Type specimens: USNM 64585
Type repository: Washington, USNM ; paratypes in NHM London and NHM Basel

Linked specimens: USNM-64585 USNM-64586

Current identification/main database link: Praeorbulina glomerosa (Blow 1956)


Original Description
Test nearly spherical, with last chamber nearly globular, inflated, and embracing the earlier part of the test more than 75 per cent. Dorsal apertures of the penultimate and earlier chambers, and the apertures of the last chamber, are numerous short narrow slits confined to sutures between the last, penultimate and earlier chambers. Apertures of the last chamber more than eight. Sutures fairly deeply incised.

Extra details from original publication
Remarks: The subspecies is defined by the possession of discrete short slits rather than subcircular or circular apertural pores. The slits are confined to the sutural positions and are not distributed over the area of the last chamber. The sutures are rather more deeply incised than in Globigerinoides glomerosa circularis. It differs from Globigerinoides glomerosa curva in having more apertures in the suture between the last and earlier chambers and in having the last chamber embracing the earlier part of the test to a greater degree.

Occurrence: The subspecies has a short range in the uppermost part of the Globigerinatella insueta zone in the Brasso formation, and extends into the extreme basal part of the overlying Globorotalia fohsi barisanensis subzone in the Cipero and Brasso formations in Trinidad. In Venezuela, it occurs in the middle part of the Siphogenerina transversa zone in the Pozon formation of Falcon.

References:

Blow, W. H. (1956). Origin and evolution of the foraminiferal genus Orbulina d'Orbigny. Micropaleontology. 2(1): 57-70. gs


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Globigerinoides glomerosa glomerosa compiled by the pforams@mikrotax project team viewed: 17-1-2021

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