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Marginotruncana


Classification: pf_mesozoic -> Globotruncanidae -> Marginotruncana
Sister taxa: Abathomphalus, Contusotruncana, Dicarinella, Gansserina, Globotruncana, Globotruncanella, Globotruncanita, Loeblichella, Marginotruncana, Radotruncana,
Daughter taxa: (blue => in age window 0-300Ma)














Specimens which cannot be assigned to established species

Taxonomy

Citation: Marginotruncana Hofker, 1956
Rank: Genus
Basionym: Rosalina marginata
Type species: Rosalina marginata Reuss, 1846
Synonyms:

Type images:

Original description: Marginotruncana:

Entries in the Catalog of original descriptions: Marginotruncana; Sigalitruncana;

Distinguishing features: Test trochospiral, biconvex to planoconvex, sutures sigmoidal, especially on the umbilical side, curved, elevated and may be beaded on the spiral side, imperforate carinal band between the two peripheral keels, peripheral outline entire to lobulate; wall calcareous, perforate, surface smooth to pustulose; primary aperture interiomarginal and extraumbilical-umbilical, bordered by a triangular porticus, those of successive apertures fusing and may even form true tegilla, infralaminal and occasionally intralaminal accessory apertures present.

Geological Range:
Last occurrence (top): within Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Total of range of species in this database
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

References:

Hofker, J., (1956). Die Globotruncanen von Nordwest-Deutshland und Holland. Neues Jahrbuch für Geologie und Palaeontologie Abhandlungen, 103: 312-340.

Korchagin 1982 [sorry, not in our bibliography yet]

Loeblich, A.R., Jr. & Tappan, H., (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York, 1059 pp.


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Marginotruncana compiled by the pforams@mikrotax project team viewed: 19-7-2018

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