Taxon Concept provided by
  Home |   Search

Click on a letter below to get a list of species:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
Globorotalia trinidadensis Bolli 1957 from: Bolli, H.M. (1957): The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad, B.W.I . Bulletin of the U.S. National Museum Vol. 215 p. 61-82
.
Anonymous: Unedited TaxonConcept data
Notice: This catalogue page may contain unedited data.

Species Globorotalia trinidadensis Bolli 1957


Diagnosis / Definition:
Bolli (1957):
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 2 1/2 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. Largest diameters of figured types 0.40 0.43 mm.
Discussion / Comments:
Bolli (1957):
Globorotalia trinidadensi8 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.
Systematics:

20
 Genus Globorotalia
  Species Globorotalia quadrata
   Species Globorotalia trinidadensis
    Species Globorotalia velascoensis

32
 Ordo Foraminiferida
  Familia Globorotaliidae
   Genus Globorotalia
    Species Globorotalia trinidadensis
Synonym list:
Bolli (1957):
1957 Globorotalia trinidadensis Bolli. - Bolli : pl. 16, figs. 19-23 new species
Was used in synonym list of:
References:

Bolli,H.M. (1957):
The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad, B.W.I . Bulletin of the U.S. National Museum Vol. 215 p. 61-82
Anonymous: Unedited TaxonConcept data
Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.