CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinoides apertasuturalis Jenkins 1960

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 apertasuturalis
Other pages this level: G. altiaperturus praealtiaperturus, G. apertasuturalis, G. bannerblowi, G. bispherica, G. bollii, G. bradyi grandis, G. bulloideus, G. cancellata, G. canimarensis, G. conglobatus altihelix, G. consuelensis, G. diminuta, G. dinapolii, G. elongata bikiniensis, G. elongata cedrosensis, G. emeisi, G. eoconglobatus> >>

Globigerinoides apertasuturalis

Citation: Globigerinoides apertasuturalis Jenkins 1960
Rank: Species
Type locality: Lakes Entrance Oil Shaft, Victoria, Australia. Holotype: from 816 feet.
Type age (chronostrat): From the Globoquadrina dehiscens dehiscens zone to the Globorotalia menardii miotumida zone,
Type repository: Milan; Micropalaeontological Collection, Universita degli Studi di Milano, Dipartimento di Scienze della Terra ÒA. DesioÓ, Italy.

Current identification/main database link:


Original Description

Test a low trochospire with a trilobed equatorial periphery. Wall calcareous, perforate, surface finely to coarsely perforate. Chambers ovate, the last chamber nearly equal in size to the penultimate chamber. Sutures slightly depressed on the spiral and umbilical sides.

Umbilicus very shallow. Apertures sutural, two, rarely three, at the base of the last chamber opposite the two umbilical sutures of the ante-penultimate chamber.


Size: Greatest diameter of holotype 0.35 mm.

Extra details from original publication
Both smooth walled and coarsely ornamented forms are found within this species, which suggests that it may be polygenetic. The smooth walled form is possibly related to Globigerina eamesi Blow and is much rarer than the coarser walled form which is related to Globigerina woodi. The more coarsely ornamented form is regarded as being the more typical.

References:

Jenkins, D. G. (1960). Planktonic foraminifera from the Lakes Entrance oil shaft, Victoria, Australia. Micropaleontology. 6: 345-371. gs


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

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