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Asterohedbergella asterospinosa


Classification: pf_mesozoic -> Hedbergellidae -> Asterohedbergella -> Asterohedbergella asterospinosa
Sister taxa: A. asterospinosa, A. sp.,

Taxonomy

Citation: Asterohedbergella asterospinosa (Hamaoui, 1965)
Rank: Species
Basionym: Hedbergella asterospinosa
Taxonomic discussion: Figure 1 to 3 holotype [copied from Chronos database]

Type images:

Original description: Hedbergella (Asterohedbergella) asterospinosa Hamaoui 1965: Text small, concavo-convex, 4 to 6 chambers on the last whorl. Peripheral outline lobate, petaloid to star-shaped, axial periphery subangular to acute. The pointed extention of the chambers are usually tubulospinate. Wall texture generally recrystallized in granular calcite.

Entries in the Catalog of original descriptions: Hedbergella (Asterohedbergella) asterospinosa;

Geological Range:
Last occurrence (top): within R. cushmani zone (94.03-95.94Ma, top in Cenomanian stage). Data source: [copied from Chronos database]
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: [copied from Chronos 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.

Character matrix

test outline:Stellatechamber arrangement:Trochospiraledge view:Concavo-convexaperture:-
umb chamber shape:Trapezoidalcoiling axis:Lowperiphery:-aperture border:Thin lip
sp chbr shape:Trapezoidalumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:None
umbilical or test sutures:Weakly depressedumb depth:Shallowwall texture:Encrustedshell porosity:-
spiral sutures:Weakly depresseddiameter mm:0.11-0.20 mmwidth mm:breadth mm:0.075 mm
final-whorl chambers:4.0-6.0

References:

Hamaoui, M., (1965). On a new subgenus of Hedbergella (Foraminiferida). Israel Journal of Earth Sciences, 13(3-4): 133-142.


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Asterohedbergella asterospinosa compiled by the pforams@mikrotax project team viewed: 26-9-2017

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AphiaID: 1035349 Nomenclatural data on WoRMS
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