Muricohedbergella blakensis

Classification: pf_mesozoic -> Hedbergellidae -> Muricohedbergella -> Muricohedbergella blakensis
Sister taxa: M. almadenensis, M. angolae, M. astrepta, M. atlantica, M. blakensis, M. crassa, M. delrioensis, M. flandrini, M. hoelzli, M. holmdelensis, M. implicata, M. kyphoma, M. loetterli, M. monmouthensis, M. planispira, M. portsdownensis, M. praelibyca, M. rosebudensis, M. sliteri, M. wondersi, M. sp.,


Citation: Muricohedbergella blakensis (Petrizzo and Huber, 2006)
Rank: Species
Basionym: Hedbergella blakensis

Type images:

Original description: Wall with dense pustules, irregularly distributed and more developed on the earliest chambers of the last whorl, last chamber smooth. Test low trochospiral, biconvex, equatorial periphery lobate, peripheral margin rounded, perforate and marked by pustules irregularly scattered on the first chambers of the last whorl. Chambers inflated, 6, rarely 7 in final whorl, uniformly and slowly increasing in size, triangular on the umbilical side, circular on the spiral side; sutures depressed and straight on both sides; umbilicus moderately narrow; primary aperture umbilical-extraumbilical, bordered by a thin lip.

Entries in the Catalog of original descriptions: Hedbergella blakensis

Geological Range:
Last occurrence (top): within P. appenninica zone (100.50-101.92Ma, top in Albian stage). Data source: [copied from Chronos database]
First occurrence (base): within P. appenninica zone (100.50-101.92Ma, base in Albian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:aperture:
sp chamber shape:coiling axis:Lowperiphery:N/Aaperture border:
umb chbr shape:umbilicus:periph margin shape:Moderately roundedaccessory apertures:
spiral sutures:umb depth:wall texture:Coarsely pustuloseshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:6.0-7.0 N.B. These characters are used for advanced search. N/A - not applicable


Petrizzo, M. R. & Huber, B. T. (2006). Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean). Journal of Foraminiferal Research. 36: 166-190. gs


Muricohedbergella blakensis compiled by the pforams@mikrotax project team viewed: 29-9-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110362 Go to Archive.is to create a permanent copy of this page - citation notes

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