Catalog - Globotruncana lobata Catalog - Globotruncana lobata

CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana lobata de Klasz 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 lobata
Other pages this level: << < G. kuepperi, G. lakrai, G. lamellosa, G. lapparenti, G. lapparenti coronata, G. lapparenti depressa, G. lapparenti inflata, G. lapparenti longilocula, G. leupoldi, G. linnei angusticarenata, G. linnei bulloides, G. linnei caliciformis, G. linnei stuarti, G. linneiana obliqua, G. linneiformis, G. lobata, G. loeblichi, G. loefgreni, G. lugeoni, G. lugeoni angulata, G. lunaris, G. marginata austinensis, G. marianosi, G. mariei, G. mayaroensis, G. mexicana, G. monmouthensis, G. morozovae, G. nakkadyi, G. naqibi, G. navarroensis> >>

Globotruncana lobata

Citation: Globotruncana lobata de Klasz 1955
Taxonomic rank: species
Described on page(s) : 43-44
Type specimens: 276771; Plate 7, figures 2a-c
Type sample (& lithostrat): Higher Buchecker layers
Type age (chronostrat): upper part of the Upper Campanian
Type locality: Along a small creek, 5 meters southeast of the bridge 175 meters south-southeast of Schoneck, northeast of Eisenarzt and south of Traunstein, Upper Bavaria, Germany.
Type repository: Washington; USNM

Linked specimens: USNM-276771 USNM-370105

Current identification/main database link: Globotruncana ventricosa (White, 1928)


Original Description

A double-keeled Globotruncana with the following peculiarities: Dorsal side almost completely flattened, with only a slight central elevation, umbilical side strongly convex. The periphery of the test is lobate. On the dorsal side there are in general 3 whorls visible, the chambers of the innermost; whorl appearing indistinct. The sutures of the dorsal side are strongly curved opposite to the direction of coiling. The number of chambers in the last-formed whorl is 7-9; on the umbilical side they are very slightly overlapping, their sutures slightly curved. The sutures of the central whorls of the dorsal side, and in some specimens those of the first 3-4 chambers of the last-formed whorl on the chambers in most specimens show small, irregular rugosities; on tsome specimens the 3-4 last-formed chambers of the test tend to drop below the normal plane of the dorsal side, in such a manner that their upper side is lower than that of the other chambers. Because of the high number of chambers and the relatively high test, the species appear robust.

Size:
Greatest diameter of the holotype 0.76 mm; greatest thickness 0.40 mm.

Etymology:
From lobatus (lat.) = lobate.

Extra details from original publication
Relationships.-Presumably Globotruncana lobata evolved from G. lapparenti Brotzen var. tricarinata (Quereau).

Remarks - In the Buchecker Layers near Eisenärzt this very characteristic species is associated with Pseudoclavulina eggeri Cushman, Rzehakina epigona (Rzehak), Quinqueloculina antiquo, Franke var. angusto, Franke, Bolivinoides decorata decorata (Jones), B. decorata (Jones) var. delicatula Cushman, B. draco (Marsson) subsp. miliaris Hiltermann and Koch, Bolivinitella eleyi Cushman, Pseudotextularia elegans Rzehak, Ventilabrella sp., Reussella szajnochae Grzybowski, Bolivina incrassata Reuss, Globotruncana stuarti Lapparent, G. tricarinata (Quereau), G. sp. aff. G. fornicata Plummer, Dictyomitra sp. cf. D. multicostata Zittel (Radiolaria) and others. This new species was found also in a sample from the Upper Cretaceous of Tunisia, in the region of EI Alia, near Bizerte (probably late Campanian).

References:

de Klasz, I. (1955). de Klasz, I. (1955). A new Globotruncana from the Bavarian Alps and North Africa. Contributions from the Cushman Foundation for Foraminiferal Research. 6(1): 43-44. Contributions from the Cushman Foundation for Foraminiferal Research. 6(1): 43-44. gs


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Globotruncana lobata compiled by the pforams@mikrotax project team viewed: 20-6-2025

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