Catalog - Globigerina weissi Catalog - Globigerina weissi

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina weissi Saito 1963

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 weissi
Other pages this level: << < 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, G. zealandica, G. neoparawoodi

Globigerina weissi

Citation: Globigerina weissi Saito 1963
taxonomic rank: species
Described on page(s) : 188
Type specimens: Pl. 54, figs. 13a-14; Holotype; IGPS coll. cat. no. 85321, from sample S-3.5, the Saigo formation; Paratype; IGPS coll. cat. no. 85322, from sample Od-3, the Oidawara formation.
Type sample (& lithostrat): sample S-3.5; Mikasa Group, Saigo Fm (see also Saito 1960)
Type age (chronostrat): Globigerinatella insueta / Globigerinoides bisphericus Subzone
Type locality: Kakegawa district, Honshu, Japan

Current identification:


Original Description

Test very small, low to moderately trochospiral, with a subcircular, lobulated equatorial profile, axial periphery rounded, two to three whorls visible on spiral side; chambers subglobular, increasing gradually in size as added, final chamber somewhat protruded towards umbilical side, size nearly equal to chambers in last whorl, usually five chambers per whorl, 15 to 18 in all; sutures depressed, slightly curved to nearly radical on spiral side, slightly sinuous to radial on umbilical side; wall thin, calcareous, perforate, surface smooth or very finely hispid; aperture umbilical, interiomarginal, rather slit-like opening with a thin narrow lip of clear shell material. Coiling of test nearly random in direction.

Size:
Maximum diameter of holotype 0.14 mm., thickness 0.11 mm. Other specimens range from 0.12 to 0.17 mm. in maximum diameter.

Etymology:
The specific name is given in honor of Mr. Lawrence Weiss of the International Petroleum Company, Ltd., who first noted and illustrated this species.

Extra details from original publication
Remarks:-G. weissi differs from Globigerina quinqueloba Natland by the smaller test with thin but distinct lip, very restricted narrow slit-like aperture and smoother shell surface. G. weissi shows no variable last chamber or the development of various shaped overhanging lip, which may sometimes coalesce to the earlier chambers as seen in G. quinqueloba.

Occurrence and distribution: - This species is common in the Saigo formation (=the Globigerinatella insueta / Globigerinoides bisphericus Subzone) and the Oidawara formation (=the Globorotalia fohsi barisaensis Zone). Weiss (loc. cit.) reported this species to occur throughout the Oligocene to middle Miocene sediments of northern Peru.

References:

Saito, T. (1963). Miocene planktonic foraminifera from Honshu, Japan. Science Reports of the Tohoku University. 35: 123-209. gs

Weiss, L. (1955b). Planktonic index foraminifera of northwestern Peru. Micropaleontology. 1: 301-319. gs


logo

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

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=130726 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image
Powered by Commentics

Comments

No comments yet. Be the first!