CATALOG OF ORIGINAL DESCRIPTIONS: Turborotalita praequinqueloba Hemleben & Olsson, in Olsson et al 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 -> T -> Turborotalita -> Turborotalita praequinqueloba
Other pages this level: T. detrita primoripumilio, T. detrita roglbolliorum, T. praequinqueloba, T. primitiva, T. quinqueloba lingulata

Turborotalita praequinqueloba

Citation: Turborotalita praequinqueloba Hemleben & Olsson, in Olsson et al 2006
Rank: Species
Type locality: Wayne County, Mississippi
Type age (chronostrat): Zone E15/16
Type sample (& lithostrat): Shubuta Clay
Type specimens: PLATE 6.20, FIGURES 1-21; Holotype (USNM 521873) and paratype (USNM 521874)
Type repository: Washington; USNM

Linked specimens: USNM-521873 USNM-521874

Current identification/main database link: Turborotalita praequinqueloba Hemleben & Olsson, in Olsson et al 2006


Original Description
Type of wall: Normal perforate, spinose, ruber- type, cancellate wall structure, covered by a crust in adult stage.

Test morphology: Test very low trochospiral, lobulate in outline, chambers globular; in spiral view 4- 4½ globular, slightly embracing chambers in ultimate whorl, increasing moderately in size, ultimate chamber sometimes reduced in size, sutures moderately depressed, straight; in umbilical view 4-4½ globular, slightly embracing chambers, increasing moderately in size, ampullate ultimate chamber often reduced and directed towards and over the umbilicus, sutures moderately depressed, straight, umbilicus small and often covered by ultimate chamber, aperture umbilical, a wide arch bordered by an imperforate rim or narrow thickened lip; in edge view chambers globular in shape, slightly embracing.

Size: Maximum diameter of holotype 0.27 mm, thickness 0.13 mm.

Etymology: Named because it precedes the modern species Turborotalia quinqueloba (Natland).

Extra details from original publication
DISTINGUISHING FEATURES.— Turborotalita praequinqueloba n. sp. is characterized by its small, lobulate test, the umbilically directed ultimate chamber, and the ruber-type cancellate wall texture.

DISCUSSION.— Turborotalita praequinqueloba n. sp. is relatively rare in late Eocene sediments. Workers may have overlooked it due to its small size, although poor preservation may play a part in its lack of recognition.

PHYLOGENETIC RELATIONSHIPS.— Turborotalita praequinqueloba n. sp. is derived from T. carcoselleensis by developing a more lobate test and a more fully developed Turborotalita-type wall texture. It is believed to be related to Turborotalita quinqueloba which ranges from the Oligocene to Recent due to close morphologic similarity.

STRATIGRAPHIC RANGE.— Late Eocene (Zone E15- E16).

GEOGRAPHIC DISTRIBUTION.—Described from a low latitude locality.

STABLE ISOTOPE PALEOBIOLOGY.— No data available.

References:

Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (2006a). 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 V O

Pearson, P. N. & Kucera, M. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene Turborotalita. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 12): 385-392. gs V O


logo

Turborotalita praequinqueloba compiled by the pforams@mikrotax project team viewed: 30-7-2021

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=132426 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