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Praeglobotruncana


Classification: pf_mesozoic -> Hedbergellidae -> Praeglobotruncana
Sister taxa: Asterohedbergella, Clavihedbergella, Costellagerina, Falsotruncana, Hedbergella, Helvetoglobotruncana, Liuella, Microhedbergella, Muricohedbergella, Paracostellagerina, Paraticinella, Praeglobotruncana, Pseudoguembelitria, Whiteinella,
Daughter taxa (blue => in age window 0-300Ma)












Specimens which cannot be assigned to established species

Taxonomy

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

Type images:

Original description: Praeglobotruncana:

Entries in the Catalog of original descriptions: Praeglobotruncana;

Short diagnosis: 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 occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

References:

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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Praeglobotruncana compiled by the pforams@mikrotax project team viewed: 18-8-2017

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AphiaID: 722169 Nomenclatural data on WoRMS
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