Catalog - Chiloguembelina ujliaensis

CATALOG OF ORIGINAL DESCRIPTIONS: Chiloguembelina ujliaensis Morozova in 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 -> C -> Chiloguembelina -> Chiloguembelina ujliaensis
Other pages this level: C. adriatica, C. andreae, C. circumlabiata, C. fusiformis, C. midwayensis strombiformis, C. midwayensis subcylindrica, C. minutissima, C. noguerensis, C. orientalis, C. parallela, C. praecursor, C. subtriangularis, C. subwilcoxensis, C. taurica, C. ujliaensis, C. victoriana, C. vineetae, C. waiparaensis, C. woodi

Chiloguembelina ujliaensis

Citation: Chiloguembelina ujliaensis Morozova in Morozova et al. 1967
Rank: Species
Type specimens: holotype (fig. 7) 3512/41; other figured specimen (fig. 8) 3512/44.
Type age (chronostrat): Lower Danian, Globigerina (Giobigerina) microcellulosa Zone. Very abundant.
Type locality: Tarkhankhut Peninsula, Crimea. Also found commonly in the Caucasus; Lesser Balkhan Mountains, Turkmenistan; and Kizilcheshme, KyurenDag, Turkmenistan; and rarely at Tezheva, central Kopet-Dag, and ShamJi and Manysh, Gyaurs-Dag, all also in Turkmenistan.
Type repository: Moscow, Inst. of Geol. Sci. of the Academy of Sciences

Current identification:

Original Description

[Translation from the Russian. - A flat Chiloguembelina, early chambers increase in size rapidly, later ones slowly. [Description. - Test broad, wedge-shaped, strongly compressed bilaterally. Height one and a half times width. Periphery lobate. Initial end acute, with an initial angle of 35-50°. Apertural end broadly rounded. Test made up of 8-12 chambers. Chamber growth relatively even. Early chambers spherical, increase in size a little more rapidly than the later high, alate chambers, which slowly increase in size and differ little in size from one another. Sutures depressed, straight. Apertural surface of last chamber obliquely cut off. Aperture quite high, semioval or semicircular, off the growth axis of the test. Wall thin, semitransparent, finely perforate. Surface of chambers smooth. Around the apertural end sometimes very small spines are seen. 

Height 0.25mm, Width 0.15mm, Breadth 0.09mm


Extra details from original publication
Variation and remarks. - In the species described dimorphism is quite distinct. The microspheric form is represented by broad low tests with a sharp initial end (fig. 7a-c). The megalospheric form is expressed by narrow and high tests with a large proloculus (fig. 8).

Comparison. - The species described is closest to C. midwayensis (Cushman) [Guembelina midwayensis, 1940], from which it differs by its flatter test and few, high, evenly enlarging chambers. It differs in these features from the similar species C. crinita (Glaessner) [Guembelina crinita, 1937] and C. trinitatensis (Cushman and Renz) [Guembelina trinitatensis, 1942].]

Editors' Notes


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


Chiloguembelina ujliaensis compiled by the pforams@mikrotax project team viewed: 30-11-2022

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