CATALOG OF ORIGINAL DESCRIPTIONS: Acarinina pentacamerata acceleratoria 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 -> A -> Acarinina -> Acarinina pentacamerata acceleratoria
Other pages this level: << < A. clara, A. compacta, A. crassaformis simulata, A. discors, A. falsospiralis, A. inaequiconica, A. indolensis, A. intermedia, A. interposita, A. kiewensis, A. mattseensis alticonica, A. mcgowrani, A. microsphaerica, A. multicamerata, A. multiloculata, A. pentacamerata acceleratoria, A. pentacamerata camerata, A. pentacamerata erevanensis, A. planodorsalis, A. praecursoria, A. primitiva, A. proxima, A. pseudosubsphaerica, A. pseudotopilensis, A. punctocarinata, A. quadratoseptata, A. rotundimarginata, A. rugosoaculeata, A. subintermedia, A. subpentacamerata, A. tadjikistanensis djanaensis, > >>

Acarinina pentacamerata acceleratoria

Citation: Acarinina pentacamerata acceleratoria Khalilov 1956
Rank: sub-species
Type locality: from northeastern Azerbaidzhan S.S.R
Type age: Lower Eocene
Holotype Repository: Baku; Geological Institute, Academy of Sciences, Baku, Azerbaijan
Type & figured specimens: pl. 5, fig. 7a-c
Description on pages: 253

Current identification/main database link: Acarinina aspensis (Colom 1954)

Original Description
Translation from the Russian. - Test conical, dorsal side strongly convex, the first and second whorls having four chambers each; the third whorl has five or six semispherical and sub- spherical chambers. Ventrally, there are six chambers, elongate at the periphery.

Test large, rounded, conical, periphery lobate. Dorsal side consider- ably inflated, largest convexity formed by the chambers of the early whorls. Following the round initial chamber there are three whorls, of which the first has four small chainlike chambers; the second has four semispherical chambers; and in the third there are six inflated chambers, somewhat tapering toward the umbilicus. Ventrally, around the broad, deep umbilicus, there are six inflated chambers of the last whorl, elongate at the periphery. Sutures narrow, nearly straight, depressed. Aperture slitlike, in the final chamber, on the side of the umbilical region. Wall calcareous, densely porous, with numerous spines between them.

Size: Diameter 0.45 mm.; thickness 0.34 mm.

Extra details from original publication
Comparison. - Individual juvenile specimens of the present species are not markedly convex on the ventral side, and have five spherical or moderately elongate chambers in the last whorl; the characteristic feature of adult specimens is the considerable convexity of the early whorls. This variety of Acarinina pentacamerata (Subbotina) [Globorotalia pentacamerata, 1947] differs from the typical form in the lesser number of chambers in the early whorls.


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


Acarinina pentacamerata acceleratoria compiled by the pforams@mikrotax project team viewed: 26-2-2020

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