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Muricohedbergella monmouthensis


Classification: pf_mesozoic -> Hedbergellidae -> Muricohedbergella -> Muricohedbergella monmouthensis
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 monmouthensis (Olsson, 1960)
Rank: Species
Basionym: Globorotalia monmouthensis Olsson, 1960
Synonyms:
Taxonomic discussion: Neotype selected by Olsson et al. (1999) to replaced lost holotype.
Combniation in Muricohedbergella propsed by Huber & Leckie 2011

Type images:

Original description: Test.--very low trochospiral, nearly planispiral in appearance. Equatorial periphery strongly lobate. Axial periphery rounded.
Wall.--calcareous, finely perforate, covered with short minute spines.
Chambers.--inflated, globular; about 15 arranged in 2 1/2 whorls. The 5, occasionally 6, chambers of the final whorl increase rather rapidly in size; the last two make up over 1/2 of the test.
Sutures.--spiral side: oblique in early stages to straight in adult stages, depressed, Umbilical side: radial, depressed.
Umbilicus.--narrow, deep.
Aperture.--a low arch with a distinct lip; interiomarginal, extraumbilical-umbilical.
Coiling.--random. 

Entries in the Catalog of original descriptions: Globorotalia monmouthensis

Geological Range:
Last occurrence (top): within P0 zone (66.00-66.04Ma, top in Danian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. gansseri zone (71.75-72.97Ma, base in Campanian 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 monmouthensis, synonyms included - Hedbergella monmouthensis; Loeblichella monmouthensis;
  • space-time plot :: Samples map :: Parent: Muricohedbergella

    Character matrix

    test outline:Lobatechamber arrangement:Trochospiraledge view:aperture:
    sp chamber shape:Globularcoiling axis:Very lowperiphery:N/Aaperture border:Thin lip
    umb chbr shape:Globularumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Relict
    spiral sutures:Strongly depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:Finely Perforate: 1-2.5µm
    umbilical or test sutures:Strongly depressedfinal-whorl chambers:5.0-6.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    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

    Olsson, R. K. (1960). Foraminifera of late Cretaceous and earliest Tertiary age in the New Jersey Coastal Plain. Journal of Paleontology. 34(1): 1-58. gs

    Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs

    Smith, C. C. & Pessagno, E. A. (1973). Planktonic foraminifera and stratigraphy of the Corsicana formation (Maestrichtian) North-central Texas. Cushman Foundation for Foraminiferal Research, Special Publication. 12: 1-67. gs


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    Muricohedbergella monmouthensis compiled by the pforams@mikrotax project team viewed: 15-12-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110371 Go to Archive.is to create a permanent copy of this page - citation notes



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