Classification: pf_mesozoic -> Hedbergellidae -> Praeglobotruncana
Sister taxa: Asterohedbergella, Clavihedbergella, Costellagerina, Falsotruncana, Hedbergella, Helvetoglobotruncana, Liuenella, Microhedbergella, Muricohedbergella, Paracostellagerina, Paraticinella, Praeglobotruncana, Pseudoguembelitria, Whiteinella,
Daughter taxa: (blue => in age window 0-800Ma)

Specimens which cannot be assigned to established species


Citation: Praeglobotruncana Bermudez 1952
Rank: Genus
Basionym: Globorotalia delrioensis
Type species: Globorotalia delrioensis Plummer, 1931

Original description: Concha trocoide, comprimida, biconvexa; horde periferico simple y aguda, camaras numerosas, aumentando gradualmente de tamafio segun se forman, todas visibles por el lado dorsal en varias vueltas de espira, solo visibles par el lado ventrallas de la ultima vuelta; suturas dorsales limbadas, ventrales hundidas; pared calcarea, perforada; umbilicada; abertura como una ranura sencilla en la base de la cara septal de la ultima camara. Dimension 0.3 mm. 

Entries in the Catalog of original descriptions: Praeglobotruncana

Distinguishing features: Test trochospiral, biconvex to spiroconvex, umbilicate, periphery subangular with prominent nonporous carinal band that may have numerous pustules in the earlier part of the last whorl but is less distinct on the final chamber, sutures curved on the spiral side, radial on the umbilical side, flush to slightly depressed; wall calcareous, finely and densely perforate, radial in structure, surface smooth to pustulose or nodose, most rugose on the early chambers and keel; aperture an interiomarginal, extraumbilical-umbilical arch that extends to the periphery, bordered by an imperforate lip or flap.

Geological Range:
Last occurrence (top): within Coniacian Stage (86.26-89.77Ma, top in Coniacian stage). Data source: Total of range of species in this database
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Total of range of species in this database

Plot of range and occurrence data:


Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gs


Praeglobotruncana compiled by the pforams@mikrotax project team viewed: 20-10-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110425 Go to Archive.is to create a permanent copy of this page - citation notes

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