CATALOG OF ORIGINAL DESCRIPTIONS: Marginotruncana pauperata Hofker 1956
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Citation: Marginotruncana pauperata Hofker 1956Taxonomic rank: speciesType age (chronostrat): Upper Cretaceous, Maestrichtian. Given in the text as midlle Maestrichtian except where reworked in the upper Maestrichtian; figured specimens from the lower Maestrichtian (tf. 21, top and second row); middle Maestrichtian (tf. 21, bottom row; tf. 22); and undifferentiated Maestrichtian (tf. 21, third row).Type locality: Not designated. Figured specimens from a depth of 394 meters in Gross - Hehlen well no. 1016 (tf. 21, top row); a depth of 815 meters (tf. 21, second row) and 775 meters itL 2 1, third row) in Siegel sum well; all in northwestern Germany; and from Grube Mesch, South Limburg, the Netherlands (tf. 21, bottom row; tf. 22). Unfigured specimens from Basbeck and Ilten, both in northwestern Germany.Type repository: Depository not given; either Haarlem Netherlands Geolgical survey or Hannover Amt fŸr Bodenforschung
Original Description Schal klein. Dorsal seite gewolbt, Ventral seite in der Mitte deutliche eingesenkt, also ganze schale in der Randansicht gekrümmt. Dorsal sind fünf bis sechs Kammern am Rande, Rand ziemlich stark lobig, Suturen wenig eingesenkt, gebogen, in den Rand oft über gehend, aber nicht überlappend. Ventral jede Kammer deutlich gewolbt; dorsale Suturen mit porenlosem Saume, ventral meist nicht. Umbilikallippen gerade, so dass der Nabel einen eckigen Rand bekommt. Porenlose Umbilikallippen meist ziemlich breit. Rand der Schale etwas senkrecht auf der dorsal en Oberflache stehend, sehr breit. poronlos, mit sehr wenig erhabnen begrrnzenden Rippen, welche oft fehlen. Der gerade Rand unterscheidet diese Art von Globotruncana globigerinoides Brotzen, die nach der Ventralseite gekrummte Schale von Globotruncana ventricosa White. Size: Lange der Schale 0.30-0.45 mm., Dicke 0.12-0.18 mm. Extra details from original publication Globotruncana marginnta (Russ). - Visser. 1951, Leidse Geol. Meded. vol. 16, p. 286. pl.1. fig. 13a- c.
References:
Hofker, J. (1956a). Hofker, J. (1956). Die Globotruncanen von Nordwest-Deutshland und Holland. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 103: 312-340. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 103: 312-340. gs
Marginotruncana pauperata compiled by the pforams@mikrotax project teamviewed: 17-6-2025
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