arrayname: original 
Catalog - Globotruncana wiedenmayeri magdalenaensis Catalog - Globotruncana wiedenmayeri magdalenaensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana wiedenmayeri magdalenaensis Gandolfi 1955

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 -> Globotruncana -> Globotruncana wiedenmayeri magdalenaensis
Other pages this level: << < G. stephensoni, G. stuarti parva, G. sudrensis, G. sudrensis parallela, G. tarfayaensis, G. thalmanni thalmanni, G. ticinensis, G. torensis, G. tricarinata colombiana, G. tricarinata desioi, G. undulata, G. verrucosa, G. vridhachalensis, G. walfischensis, G. wiedenmayeri, G. wiedenmayeri magdalenaensis, G. wilsoni, G. youssefi, G. zagros

Globotruncana wiedenmayeri magdalenaensis

Citation: Globotruncana wiedenmayeri magdalenaensis Gandolfi 1955
Taxonomic rank: sub-species
Type specimens: PI. 7, fig. 3a-c ; 20862: type description p.72
Type sample (& lithostrat): Km. 92 section, S. 5577.
Type age (chronostrat): Campanian-Maastrichtian
Type locality: A section near Km. 92 on the Fonseca-Riohacha road, Rancheria Valley, 40 km. north of Fonseca, NE part of the State of Magdalena, northern Colombia.
Type repository: Ithaca, New York; Paleontological Research Institution

Current identification/main database link: Gansserina wiedenmayeri (Gandolfi, 1955)


Original Description

Flat dorsally; strongly convex and inflated on the ventral side like the previous form; double-keeled in the early stages of the last volution, it later becomes single-keeled or some what subangular. The chambers are four-five in the last whorl, exceptionally six; the test is rough as is common in these forms with ridges and various types of rugosity especially in the early chambers.

Size:
Dimensions of holotype. Width 0.55 x 0.53 mm.; thickness, 0.30 mm.

Extra details from original publication
Remarks.—The form is similar to Glt. wiedenmayeri wiedenmayeri; it differs in that the double keel is fringing only in the early part of the shell and has generally fewer chambers in the last whorl. The test is smoother.

References:

Gandolfi, R. (1955). The genus Globotruncana in northeastern Colombia. Bulletins of American Paleontology. 36: 1-118. gs


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Globotruncana wiedenmayeri magdalenaensis compiled by the pforams@mikrotax project team viewed: 17-3-2025

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