CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia trinidadensis 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 trinidadensis
Other pages this level: << < G. spinulosa, G. strabocella, G. sturanii, 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, > >>

Globorotalia trinidadensis

Citation: Globorotalia trinidadensis Bolli 1957
Rank: species
Type locality: Trinidad Petroleum Development well Moruga 3, Trinidad (coordinates N: 143522 links; E:504382 links), sample from core 10,259-10,261 feet (TLL 192632)
Type age: Globigerina trinidadensis zone to Globorotalia uncinata zone.
Type sample and level: Lizard Springs formation.
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype (USNM P5044) and paratypes (USNM P5045 and P5046)

Linked specimens: USNM-5045 USNM-5044 USNM-5046

Current identification/main database link: Praemurica inconstans (Subbotina 1953)


Original Description
Shape of test very low trochospiral, inflated; equatorial periphery lobate; axial periphery rounded. Wall calcareous, perforate, surface smooth, in early chambers often slightly rugose. Chambers globular; 14-18, arranged in 2-2½ whorls, the 5-7 chambers of the last whorl increasing slowly in size. Sutures on spiral side radial, depressed; on umbilical side radial, depressed. Umbilicus fairly wide, open. Aperture a low arch, with a thin, liplike flap in well preserved specimens; interiomarginal, extraumbilical-umbilical. Coiling random

Size: Largest diameters of figured types 0.40-0.43 mm.

Extra details from original publication
Remarks: Globorotalia trinidadensis Bolli, new species, differs from G. pseudobulloides (Plummer) in its larger size and in having more chambers in the final whorl. Early chambers often show a rugose surface.

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 V O


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Globorotalia trinidadensis compiled by the pforams@mikrotax project team viewed: 21-9-2020

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