Catalog - Globigerina velascoensis Catalog - Globigerina velascoensis

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina velascoensis Cushman 1925

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 -> Globigerina -> Globigerina velascoensis
Other pages this level: << < G. triloculinoides parva, G. tripartita tapuriensis, G. trivialis, G. tschikryzovi, G. tumbili, G. turbulenta, G. turcmenica, G. turritilina praeturritilina, G. turritilina turritilina, G. tuschepsensis, G. umbilicata, G. umbrica, G. uruchaensis, G. utilisindex, G. varianta, G. velascoensis, G. velascoensis compressa, G. venezuelana, G. vignalii, G. voluta, G. wagneri, G. washitensis, G. weissi, G. wilsoni, G. wilsoni bolivariana, G. winkleri, G. woodi, G. woodi connecta, G. woodi extrema, G. yeguaensis, G. yeguaensis pseudovenezuelana> >>

Globigerina velascoensis

Citation: Globigerina velascoensis Cushman 1925
taxonomic rank: Species
Described on page(s) : 19
Type specimens: 4348;Plate 3, figs. 6 a--c
Type sample (& lithostrat): Velasco Fm
Type age (chronostrat): Paleocene
Type locality: Tamalte Arroyo, Hacienda el Limon, San Luis Potosi, Mexico
Type repository: Washington; USNM

Linked specimens: USNM-4348

Current identification/main database link: Subbotina velascoensis (Cushman 1925)


Original Description

Test much compressed, the dorsal side with all the chambers visible, ventral side only those of the last-formed coil, sides nearly parallel, periphery broadly rounded; chambers distinct, three or four making up the last-formed coil, early chambers subglobular, later ones becoming more compressed, and the inner margin fairly straight; wall finely and evenly reticulate; aperture on the ventral side, elongate. 

Size:
Diameter 0.45 mm.; thickness 0.25 mm.

Extra details from original publication
This is a peculiar species in its very much compressed form, the nearly straight inner margin of the chambers, and the much finer reticulate surface than usually occurs in this genus.

References:

Cushman, J. A. (1925e). Some new foraminifera from the Velasco shale of Mexico. Contributions from the Cushman Laboratory for Foraminiferal Research. 1(1): 18-23. gs


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Globigerina velascoensis compiled by the pforams@mikrotax project team viewed: 26-5-2024

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