Catalog - Globoheterohelix Catalog - Globoheterohelix

CATALOG OF ORIGINAL DESCRIPTIONS: Globoheterohelix Georgescu & Huber 2009

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 -> Globoheterohelix
Other pages this level: << < Globigerina (Zeaglobigerina), Globigerinanus, Globigerinatella, Globigerinatheka, Globigerinella, Globigerinellita, Globigerinelloides, Globigerinita, Globigerinoides, Globigerinoidesella, Globigerinoita, Globigerinopsis, Globigerinopsoides, Globoconella, Globoconusa, Globoheterohelix, Globoquadrina, Globorotalia, Globorotalia (Acarinina), Globorotalia (Astrorotalia), Globorotalia (Clavatorella), Globorotalia (Fohsella), Globorotalia (Globoconella), Globorotalia (Globorotalia), Globorotalia (Hirsutella), Globorotalia (Menardella), Globorotalia (Morozovella), Globorotalia (Truncorotalia), Globorotalia (Truncorotaloides), Globorotalia (Turborotalia), Globorotaloides> >>

Globoheterohelix paraglobulosa Georgescu & Huber 2009
= Planoheterohelix paraglobulosa

Globoheterohelix

Citation: Globoheterohelix Georgescu & Huber 2009
Rank: Genus
Type species: Globoheterohelix paraglobulosa Georgescu & Huber, 2009

Current identification/main database link: Planoheterohelix Georgescu & Huber, 2009


Original Description

Test is biserial throughout, symmetrical in edge view and with globular chambers. Proloculus is large (31–56 mm) and followed by smaller second chamber (fig. 4). Sutures are distinct, straight, and depressed. Aperture is an interiomarginal, low-to-high arch bordered by two symmetrically developed imperforate rims. Test surface is ornamented with continuous and discontinuous costae. Test wall is calcareous, hyaline, and intercostally microperforate to rarely finely perforate.

Etymology:
The Latin prefix globo (= globose) is added to the pre-existing genus name Heterohelix.

Extra details from original publication
Remarks. Globoheterohelix differs from Protoheterohelix in having (1) a symmetrical test in edge view, (2) symmetrically developed periapertural structures consisting of imperforate rims, (3) globular chambers, (4) a large proloculus (fig. 5), and (5) costae. It differs from Planoheterohelix in having (1) a large proloculus that is also larger than the second chamber, (2) globular chambers, and (3) periapertural structures consisting of imperforate rims rather than flanges. Globoheterohelix differs from Heterohelix mainly in having (1) a large proloculus, (2) costate ornamentation, and (3) globular chambers without tubulospine-like projections.

Species included. Globoheterohelix paraglobulosa n. sp.

Stratigraphic range. Uppermost Cenomanian–Coniacian.

Geographic distribution. USA (Colorado, Kansas, South Dakota, Wyoming), Gulf of Mexico (Yucatan outer shelf), western North Atlantic (Blake Plateau), Caribbean region (Venezuelan basin), Africa (Egypt, Tanzania) and equato- rial Pacific (Mid-Pacific Mountains).

References:

Georgescu, M. D. & Huber, B. T. (2009). Early evolution of the Cretaceous serial planktic foraminifera (late Albian-Cenomanian). Journal of Foraminiferal Research. 39: 335-360. gs

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Globoheterohelix compiled by the pforams@mikrotax project team viewed: 21-3-2023

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