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Muricohedbergella angolae


Classification: pf_mesozoic -> Hedbergellidae -> Muricohedbergella -> Muricohedbergella angolae
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.,

Taxonomy

Citation: Muricohedbergella angolae (Caron, 1978)
Rank: Species
Basionym: Hedbergella angolae

Type images:

Original description: Diagnosis, - Test low trochospiral, nearly flat on spiral side, covered with coarse oriented pustulae, especially on first chambers on the last whorl. The ultimate chamber is smooth. Chambers globular, 5 to 5 and one-half in final whorl, increasing gradually in size, the last chamber increasing very rapidly, giving the test its specific appearance. Umbilicus wide. Primary aperture interiomarginal, umbilical to extraumbilical, bordered by an apertural flap. Greatest diameter of holotype 400 microns, of topotypes 350 microns.

Entries in the Catalog of original descriptions: Hedbergella angolae

Geological Range:
Last occurrence (top): within T. reicheli zone (95.94-96.08Ma, top in Cenomanian stage). Data source: [copied from Chronos database]
First occurrence (base): within T. primula zone (107.39-111.84Ma, 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

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Muricohedbergella angolae, synonyms included - Hedbergella angolae;
  • space-time plot :: Samples map :: Parent: Muricohedbergella

    Character matrix

    test outline:Lobatechamber arrangement:Trochospiraledge view:Compressedaperture:Umbilical-extraumbilical
    sp chamber shape:Globularcoiling axis:Lowperiphery:N/Aaperture border:Thin lip
    umb chbr shape:Globularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Relict
    spiral sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:Finely Perforate: 1-2.5µm
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:5.0-5.5 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Caron, M. (1978). Cretaceous planktonic foraminifera from DSDP Leg 40, southeastern Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 651-678. gs


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    Muricohedbergella angolae compiled by the pforams@mikrotax project team viewed: 9-12-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110359 Go to Archive.is to create a permanent copy of this page - citation notes



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