CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia uncinata Bolli 1957

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 -> G -> Globorotalia -> Globorotalia uncinata
Other pages this level: << < G. subbotinae, G. subconica, G. suterae, G. tadjikistanensis, G. testarugosa, G. tetracamerata, G. thebaica, G. tortiva, G. tosaensis, G. traubi, G. tribulosa, G. trichotrocha, G. trinidadensis, G. troelseni, G. truncatulinoides excelsa, G. uncinata, G. uncinata carinata, G. ungulata, G. velascoensis parva, G. wartsteinensis, G. whitei, G. wilcoxensis, G. wilcoxensis acuta, G. wilesi, G. woodi, G. youngi, G. zealandica, G. zealandica incognita, G. zealandica pseudomiozea,

Globorotalia uncinata

Citation: Globorotalia uncinata Bolli 1957
Rank: Species
Type locality: Globorotalia uncinata zone to Globorotalia pusilla pusilla zone, Lizard Springs formation, Trinidad
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype (USNM P5048) from west side of railway track, south of the Pointe-a-Pierre Railway Station, about 500 feet from the level crossing of Station Eoad, Pointe-a-Pierre, Trinidad (coordinates N:259200 links; E:362900 links), sample K.E. 23575 (TLL 178894).

Linked specimens: USNM-5048

Current identification/main database link: Praemurica uncinata (Bolli 1957)


Original Description
Shape of test low trochospiral, spiral side almost flat or slightly convex, umbilical side distinctly convex; equatorial periphery distinctly lobate; axial periphery rounded to subangular. Wall calcareous, perforate, surface finely spinose. Chambers subangular, inflated, laterally compressed; 12-15, arranged in about 2 1/2 whorls, the 5-6 chambers of the last whorl increasing moderately in size. Sutures on spiral side strongly curved, depressed; on umbilical side radial, depressed. Umbilicus fairly narrow, deep, open. Aperture a low arch; interiomarginal, extraumbilical-umbilical. Coiling random.

Size: Largest diameter of holotype 0.35 mm.

Extra details from original publication
Globorotalia uncinata Bolli, new species, differs from the related G. pseudobulloides (Plummer)
in having subangular, laterally distinctly truncated chambers and more strongly cmved sutures on the
spiral side. An intermediate specimen is shown on plate 17, figures 16-18 (USNM P5075). Globorotalia
uncinata is regarded as the ancester of Globorotalia angulata (White). A transitional form between these
two species is shown on plate 17, figures 10-12 (USNM P5074).

References:

Bolli, H. M. (1957d). The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad. In, Loeblich, A. R. , Jr. , Tappan, H. , Beckmann, J. P. , Bolli, H. M. , Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 61-82. gs


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Globorotalia uncinata compiled by the pforams@mikrotax project team viewed: 22-8-2019

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