CATALOG OF ORIGINAL DESCRIPTIONS: Globoconusa conusa Khalilov 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 -> Globoconusa -> Globoconusa conusa
Other pages this level: G. conusa, G. daubjergensis gigantea, G. quadripartitaformis, G. tripartita, G. victori

Globoconusa conusa

Citation: Globoconusa conusa Khalilov 1956
Rank: species
Type locality: Holotype from northeastern Azerbaidzhan S.S.R. ; and found also in the Maly Balkhan, Turkmen S.S.R.
Type age (chronostrat): Lower Paleocene, Danian.
Type specimens: pl. 5, fig. 2a-c, holotype, X 6o.: no. 242.
Type repository: Baku; Geological Institute, Academy of Sciences, Baku, Azerbaijan

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


Original Description
[Translation from the Russian. - Test high conical, gradually tapering toward the pointed initial end. Its height nearly equal to diameter; consists of three whorls, of which the first two have four semispherical chambers each, and the last has four nearly spherical chambers.

[Test strongly thickened, dorsal side high conical, tapering toward the initial chamber, followed by two whorls with four semispherical chambers in each and one whorl with four nearly spherical chambers. On the ventral side the four spherical chambers of the last whorl are arranged around the umbilicus. Spiral suture depressed. Sutures between chambers narrow, straight, depressed; they are most strongly depressed in the last whorl. Aperture small, curved, in last chamber, opening onto the umbilical side. Wall calcareous, covered with small, dense pits most sharply expressed in the last whorl.

Size: Diameter 0.22 mm.; height 0.23 mm.

Extra details from original publication
[Comparison. - The most variable characteristic of this species is the height of the cone on the dorsal side. Along with forms having strongly pointed conical dorsal sides, specimens are also found with rather blunt apexes and with a lesser thickness of the test; nevertheless, they retain the high conical dorsal side that is characteristic of the genus Globoconusa. In its structure, the present species is close to Globigerina trochoides Reuss, described from the Cretaceous of Bohemia, but differs in the presence of four chambers in each whorl.]

References:

Khalilov, D. M. (1956). 0 pelagicheskoy faune foraminifer Paleogenovykh otlozheniy Azerbaydzhana [Pelagic Foraminifera of the Paleogene Deposits of the Azerbaizhan SSR]. Trudy Instituta Geologii, Akademiya Nauk Azerbaidzhanskoi SSR. 17: 234-255. gs


logo

Globoconusa conusa compiled by the pforams@mikrotax project team viewed: 15-6-2021

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=130923 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics