pforams@mikrotax - Muricohedbergella pforams@mikrotax - Muricohedbergella


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

Muricohedbergella angolae

Muricohedbergella astrepta

Muricohedbergella atlantica

Muricohedbergella blakensis

Muricohedbergella crassa

Muricohedbergella delrioensis

Muricohedbergella flandrini

Muricohedbergella hoelzli

Muricohedbergella holmdelensis

Muricohedbergella implicata

Muricohedbergella kyphoma

Muricohedbergella loetterli

Muricohedbergella monmouthensis

Muricohedbergella planispira

Muricohedbergella portsdownensis

Muricohedbergella praelibyca

Muricohedbergella rosebudensis

Muricohedbergella sliteri

Muricohedbergella wondersi

Muricohedbergella sp.
Specimens which cannot be assigned to established species


Citation: Muricohedbergella Huber&Leckie, 2011
taxonomic rank: Genus
Type species: Muricohedbergella delrioensis (Carsey, 1926)

Original description:

Test wall moderately thick, multilamellar, finely perforate, wall pores variably spaced in adult chambers, surface moderately to coarsely muricate or pustulose, never with a keel, raised sutures or imperforate peripheral margin. Test small to moderate in size, coiled in a very low to low trochospire, spiral side evolute, umbilical side mostly involute; chambers globular, never elongated radially, increasing slowly to moderately in size, with 4.5-7 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch that is bordered by a thick lip or flap that may extend partly into the umbilical region.

Entries in the Catalog of original descriptions: Muricohedbergella

Distinguishing features:
Parent taxon (Hedbergellidae): Test trochospirally coiled, primary aperture interiomarginal, extraumbilical-umbilical, with prominent apertural lip, apertures of earlier chambers remain visible around the umbilical region; no sutural secondary apertures.
This taxon: Test wall multilamellar, finely perforate, wall pores, surface moderately to coarsely muricate or pustulose; test coiled in a very low to low trochospire; chambers globular with 4.5-7 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch bordered by a thick lip or flap.

Character matrix
test outline:chamber arrangement:Trochospiraledge view:aperture:Umbilical-extraumbilical
sp chamber shape:coiling axis:periphery:aperture border:Thin lip
umb chbr shape:umbilicus:periph margin shape:accessory apertures:
spiral sutures:umb depth:wall texture:Finely muricateshell porosity:
umbilical or test sutures:final-whorl chambers:4-7 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): at top of P0 zone (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within T. primula zone (107.39-111.84Ma, base in Albian stage). Data source: Total of ranges of species in this database

Plot of range and occurrence data:


Huber, B. T. & Leckie, R. M. (2011). Planktic foraminiferal species turnover across deep-sea Aptian/Albian boundary sections. Journal of Foraminiferal Research. 41: 53-95. gs


Muricohedbergella compiled by the pforams@mikrotax project team viewed: 16-7-2024

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