nmn

Rugoglobigerina pennyi


Classification: pf_mesozoic -> Rugoglobigerinidae -> Rugoglobigerina -> Rugoglobigerina pennyi
Sister taxa: R. hexacamerata, R. macrocephala, R. milamensis, R. pennyi, R. rugosa, R. spinosa, R. sp.,

Taxonomy

Citation: Rugoglobigerina pennyi Bronnimann, 1952
Rank: Species
Basionym: Rugoglobigerina rugosa pennyi

Type images:

Original description: The test is of intermediate size.The chambers are arranged in a low trochoidal spire of about 2 whorls. The spiral side is slightly depressed. The las volution comprises 6-7 chambers which do not, or only very slowly, increase in size. The chambers are truncate on the apertural side and rounded peripherally. The subcircular umbilicus is large and deep, and covered with a frail plate, usually preserved only in fragments along the apertural edges. The large, arcuate apertures open into the umbilicus and seem to be provided with minute lip-like borders. The surface shows strong rugosities which in the last volution are arranged in the meridional pattern.

Entries in the Catalog of original descriptions: Rugoglobigerina rugosa pennyi

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.30-69.18Ma, top in Maastrichtian 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

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

    Character matrix

    test outline:Subcircularchamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
    sp chamber shape:Inflatedcoiling axis:Lowperiphery:N/Aaperture border:Thin lip
    umb chbr shape:Inflatedumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:Umbilical
    spiral sutures:Moderately depressedumb depth:Deepwall texture:Meridional costellaeshell porosity:Finely Perforate: 1-2.5µm
    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

    References:

    Brönnimann, P. (1952c). Globigerinidae from the Upper Cretaceous (Cenomanian-Maestrichtian) of Trinidad, B. W. I. Bulletin of American Paleontology. 34(140): 1-70. 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


    logo

    Rugoglobigerina pennyi compiled by the pforams@mikrotax project team viewed: 22-10-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/pforams/index.php?id=110504 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (1)

    Sort By
    Page 1 of 1
     
    Gravatar
    François

    Hi

    No brackets. Genus unchanged.

    Cheers

    François

    Gravatar
    Jeremy Young (Tonbridge, UK)

    corrected - thanks! Jeremy

    Page 1 of 1
     

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics