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Planoglobulina manuelensis


Classification: pf_mesozoic -> Heterohelicidae -> Planoglobulina -> Planoglobulina manuelensis
Sister taxa: P. acervulinoides, P. brazoensis, P. browni, P. carseyae, P. manuelensis, P. multicamerata, P. riograndensis, P. sp.,

Taxonomy

Citation: Planoglobulina manuelensis (Martin, 1972)
Rank: Species
Basionym: Ventilabrella manuelensis

Type images:

Original description: "Test flabelliform to subcircular, compressed. Six chambers in diminished biserial portion, after which test abruptly flares out, having 35 chambers in multiserial portion. Early chambers in multiserial portion globular, with heavy vermicular ornamentation; later chambers globular to subglobular; fine, closely spaced, longitudinal costae on final series of chambers; 2 chambers in later portion of test sometimes merging to form single, crescent shaped chamber. Sutures depressed, slightly obscured by verimicular ornamentation. Arched, basal aperture on front and back of all but outermost chambers in final row."

Entries in the Catalog of original descriptions: Ventilabrella manuelensis

Geological Range:
Last occurrence (top): within G. gansseri zone (71.75-72.97Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. aegyptiaca zone (72.97-74.00Ma, 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

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Planoglobulina

    Character matrix

    test outline:Palmatechamber arrangement:Multiserialedge view:Compressedaperture:Multiple
    sp chamber shape:Inflatedcoiling axis:N/Aperiphery:N/Aaperture border:Thin flange
    umb chbr shape:Inflatedumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:N/A
    spiral sutures:Moderately depressedumb depth:N/Awall texture:Finely costateshell porosity:
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:6.0-12.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Martin, S. E. (1972). Reexamination of the Upper Cretaceous planktonic foraminifera genera Planoglobulina and Ventilabrella Cushman. Journal of Foraminiferal Research. 2(2): 73-92. gs


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    Planoglobulina manuelensis compiled by the pforams@mikrotax project team viewed: 20-11-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110395 Go to Archive.is to create a permanent copy of this page - citation notes



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