CATALOG OF ORIGINAL DESCRIPTIONS: Subbotina roesnaesensis Olsson & Berggren 2006

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 -> S -> Subbotina -> Subbotina roesnaesensis
Other pages this level: S. aegyptiaca, S. angiporoides lindiensis, S. cartieri, S. crociapertura, S. danvillensis subsp. karpatica, S. droogeri, S. inflatiformis, S. kiersteadae, S. loburgense, S. oregonensis, S. projecta, S. roesnaesensis, S. rugosa, S. tecta, S. triangularis cancellata, S. vialovi,

Subbotina roesnaesensis

Citation: Subbotina roesnaesensis Olsson & Berggren 2006
Rank: Species
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype (USNM 521871) and paratype (USNM 521872)

Linked specimens: USNM-521872 USNM-521871

Current identification/main database link: Subbotina roesnaesensis Olsson & Berggren, in Olsson et al. 2006


Original Description
Type of wall: Normal perforate, spinose, ruber-type wall texture.
Test morphology: Test tripartite, relatively large (0.3-0.55 mm in diameter), very low trochospiral, globular, lobulate in outline, chambers globular, ovoid in shape, wider than high, loosely embracing; in spiral view 3-4 ovoid, loosely embracing chambers in ultimate whorl, increasing rapidly in size, sutures strongly depressed, gently curved on umbilical and spiral sides of the test, ultimate chamber varies in size from reduced to large; in umbilical view 31/2-4 globular, loosely embracing chambers, increasing rapidly in size, sutures strongly depressed, straight, umbilicus a fairly large opening, aperture umbilical, a low arch, bordered by a narrow lip that may vary slightly in width, and which is in some instances recessed under a pronounced overhang of the final chamber, ultimate chamber varies in size from reduced to large; in edge view chambers globular in shape, embracing.

Size: Maximum diameter of holotype 0.32 mm, thickness 0.23 mm.

Etymology: Named after the Røsnaes Clay Formation in Denmark from where the holotype was described.

Extra details from original publication
DISTINGUISHING FEATURES.— Subbotina roesnaesensis is distinguished by its very low trochospiral, lobulate test with 3½-4 rapidly enlarging, ovoid-shaped, loosely embracing chambers, and its ruber-type wall texture.

References:

Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In, Pearson, P. N. , Olsson, R. K. , Hemleben, C. , Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 6): 111-168. gs


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Subbotina roesnaesensis compiled by the pforams@mikrotax project team viewed: 22-11-2019

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