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Clavihedbergella


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









Taxonomy

Citation: Clavihedbergella Banner and Blow 1959
Rank: Genus
Basionym: Hastigerinella subcretacea
Type species: Hastigerinella subcretacea Tappan, 1943

Type images:

Original description: Clavihedbergella: desscribed as sub-genus Praeglobotruncana (Clavihedbergella) Banner & Blow 1959

Entries in the Catalog of original descriptions: Clavihedbergella;

Short diagnosis: Test flattened, early globular chambers in a low trochospiral coil, last few chambers radially elongate to subclavate in the plane of coiling, peripheral outline lobulate, rounded peripheral margin with an imperforate band on the globular chambers but absent from the elongate ones; aperture a moderately high interiomarginal umbilical-extraumbilical arch, with imperforate bordering lip, and poorly developed relict apertures remaining in the umbilical area.

Geological Range:
Last occurrence (top): within Santonian Stage (83.64-86.26Ma, top in Santonian stage). Data source: Total of range of species in this database
First occurrence (base): within Barremian Stage (126.30-130.77Ma, base in Barremian 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. (Editors), (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York, 1059 pp.


Clavihedbergella compiled by the pforams@mikrotax project team viewed: 30-3-2017

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