CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina loetterli Nauss 1947

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 loetterli
Other pages this level: << < G. jurassica, G. juvenilis, G. kelleri, G. khadumica, G. kochi, G. kondoi, G. konkensis, G. kozlowskii, G. krosniensis, G. kugleri, G. kyushuensis, G. labiacrassata, G. linaperta, G. linaperta transdanubica, G. linaperta turgida, G. loetterli, G. lozanoi, G. macrastoma, G. marialuisae, G. mckannai, G. medizzai, G. megastoma, G. megastoma cariacoensis, G. mexicana, G. microfoliata, G. micropora, G. microstoma, G. microstoma opsionepenthoides, G. minutula, G. moskvini, G. multiloba> >>

Globigerina loetterli

Citation: Globigerina loetterli Nauss 1947
Rank: Species
Type locality: Between the depths of 1875-1885 feet in Clommel Well No. 1 in Legal subdivision 1, sec. 32, T. 55, R. 20, W. 4th meridian, Vermilion area, Alberta, Canada.
Type age (chronostrat): Late Cretaceous
Type sample (& lithostrat): Lloydminster shale, 485-495 feeet below the top
Type specimens: 7937
Type repository: Stanford University Paleontological Type Collection, CA, USA

Current identification/main database link: Muricohedbergella loetterli (Nauss, 1947)


Original Description
Test rotaliform, dorsal side convex, ventral side umbilicate; periphery rounded; chambers subglobular, closely appressed and penultimate chambers sometimes smaller than anatepenultimate; sutures distinct, depressed, slightly curved; wall calcareous, finely perforate; aperture opening into umbilicus, almost invariably obscured by foreign material.

Size: Greatest diameter, holotype 0.5 mm., paratypes 0.4-0.7 mm.; least diameter, holotype 0.4 mm., paratypes 0.3-0.6 mm.; thickness, holotype 0.25 mm., paratypes 0.2-0.4 mm.

Etymology: not stated in text but presumably named for G. J. Loetterle

Extra details from original publication
Range.-"Floods" of this species are characteristic of the central part of the Lloydminster shale where the species is associated with a few specimens of Guembelina globulosa (Ehrenberg). it has been encountered in this zone in wells in the Vermillion area, in southern Alberta and in an outcrop at Green Lake 112 NE of Lloydminster.

Comparisons.-This species is similar to G. belli White (1928) in having generally six chambers in the last whorl, and in being, the same size. It differs in having subglobular chambers, a large umbilicus, and the last two chambers smaller than the antepenultimate chamber in many specimens. The young stages of G. loetterli have a number of characters in common with G. cretacea d'Orbigny, from which it may have evolved

Editors' Notes
alternate spelling loetterlei is often seen

References:

Georgescu, M. D. (2010b). Evolutionary classification of the Upper Cretaceous (Turonian–lower Campanian) planktic foraminifera with incipient meridional ornamentation. Journal of Micropalaeontology. 29: 149-161. gs V O

Nauss, A. W. (1947). Cretaceous Microfossils of the Vermillion Area, Alberta. Journal of Paleontology. 21(4): 329-343. gs


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Globigerina loetterli compiled by the pforams@mikrotax project team viewed: 2-12-2020

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