Catalog - Globoconusa tripartita <title>Catalog - Globoconusa tripartita

CATALOG OF ORIGINAL DESCRIPTIONS: Globoconusa tripartita Morozova et al. 1967

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 -> Globoconusa -> Globoconusa tripartita
Other pages this level: G. conusa, G. daubjergensis gigantea, G. quadripartitaformis, G. tripartita, G. victori

Globoconusa tripartita

Citation: Globoconusa tripartita Morozova et al. 1967
Rank: Species
Described on page(s) : 193
Type specimens: holotype (fig. 4), no. 3512/48; other figured specimens (figs. 5, 6), nos. 3512/42,3512/43
Type age (chronostrat): Late Danian
Type locality: Chal-su River, Lesser Balkhan Mountains, Turkmenistan
Type repository: Moscow Geological lnstitute of the Academy of Sciences of the USSR, Moscow

Current identification/main database link: Globoconusa daubjergensis (Bronnimann 1953)


Original Description

Translation from the Russian. - Diagnosis. Highly conical Globoconusa, with three chambers in the last whorl. Description. - Test small, in cross section trilobate, its height is nearly equal to or greater than its diameter. Initial end tapered, apertural end broadly rounded. Test formed by two whorls, rapidly increasing in size. In the last whorl are three spherical chambers. Sutures depressed, straight. Aperture marginal, slitlike. Wall thin, finely perforate. Surface covered with very small fine spines.

Size:
Holotype - Diameter 0.13mm, height 0.11mm.

Etymology:

Extra details from original publication
Variation and remarks. -Test dimensions and the ratio of height to diameter vary over small limits. In the populations tests with an acute initial end which evidently belong to the rnicrospheric generation usually predominate, but occasionally specimens are found with a blunt initial end (megalospheric generation?). The last whorl sometimes has 3½ chambers.

Comparison. - From G. daubjergensis (Bronnimann) [Globigerina daubjergensis, 1953] this species differs by having fewer chambers in the last whorl and a trilobate test cross section. Also found commonly in the Crimea, the Caucasus, and at Kizilcheshme, Kyuren-Dag, Turkmenistan; and sparsely at Tezheva, central Kopet-Dag, and Shamli and Manysh, Gyaurs-Dag, all in Turkmenistan.

Editors' Notes

References:

Morozova, V. G., Kozhevnikova, G. E. & Kuryleva, A. M. (1967). Datsko-Paleotsenovye Raznofatsial'nye Otlozheniya Kopet-Daga I. Metody Ikh korrelyatsii po foraminiferam [Danian-Paleocene heterofacial deposits of Kopet-Dag and methods of their correlation according to the foraminifers]. Trudy Geologicheskiy Institut Akademiya Nauk SSSR. 157: 1-208. gs V O

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Globoconusa tripartita compiled by the pforams@mikrotax project team viewed: 27-1-2023

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