CATALOG OF ORIGINAL DESCRIPTIONS: Acarinina microsphaerica 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 -> A -> Acarinina -> Acarinina microsphaerica
Other pages this level: A. acarinata, A. boudreauxi, A. clara, A. crassaformis similata, A. discors, A. falsospiralis, A. inaequiconica, A. indolensis, A. intermedia, A. interposita, A. kiewensis, A. mattseensis alticonica, A. mcgowrani, A. microsphaerica, A. multiloculata, A. pentacamerata acceleratoria, A. pentacamerata camerata, A. pentacamerata erevanensis, A. planodorsalis, A. praecursoria, A. primitiva, A. pseudosubsphaerica, A. pseudotopilensis, A. punctocarinata, A. quadratoseptata, A. rotundimarginata, A. rugosoaculeata, A. subintermedia, > >>

Acarinina microsphaerica

Citation: Acarinina microsphaerica Morozova, in Morozova et al 1967
Rank: Species
Type locality: Right side of the valley of the Kacha River, highlands of the Crimea. Also found commonly in the Caucasus; Lesser Balkhan Mountains, Turkmenistan; and Kizilcheshme, Kyuren-Dag, Turkmenistan; and singly at Shamli and Manysh, Gyaurs-Dag, Turkmenistan.
Type level: Paleocene, Thanetian, upper Acarinina quadratoseptata Zone. Also occurs in the lower part of the overlying Acarinina mckannai Zone (Thanetian). Very abundant.
Holotype Repository: Moscow, Inst. of Geol. Sci. of the Academy of Sciences
Holotype number: holotype (fig. 4) 3512/51; other figured specimen (fig. 3) nos. 3512/52.

Current identification/main database link:


Original Description: [Translation from the Russian]
Diagnosis. A small Acarinina, with a moderately convex spiral side and whorls with few (4-41/2) chambers.
Description. Test small, with a quadrilobate equatorial outline. Usually test height is smaller than diameter. Test consists of 2 or 2½ whorls, slowly increasing in height. In the last whorl there are 4-4½ subspherical or laterally slightly compressed chambers. Sutures depressed, straight. Aperture marginal, a slit along the marginal suture on the umbilical side of the last chamber. Wall thin, finely perforate. Surface covered with very small spines.

Holotype size: Diameter 0.21mm, height 0.13mm

Extra details from original publication: Variation and remarks. - Test dimensions, height:diameter ratio, and degree of inflation of the chambers vary over small limits.
From A. spiralis (Bolli) [Globigerina spiralis, 1957] this species differs by the smaller number of chambers per whorl and quadrilobate equatorial outline, from A. subsphaerica (Subbotina) [Globigerina subsphaerica, 1947] and A. falsospiralis Davidzon and Morozova, 1964, by its small dimensions and lower coil, the height of which is almost always less than the test diameter.

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 Geologicheskogo Instituta. Akademiya Nauk SSSR, 157: 1-208.


Catalog entry for Acarinina microsphaerica compiled by the pforams@mikrotax project team viewed: 29-6-2017

Taxon Search




Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics