nmn

Planoglobulina acervulinoides


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

Taxonomy

Citation: Planoglobulina acervulinoides (Egger, 1900)
Rank: Species
Basionym: Guembelina acervulinoides
Taxonomic discussion: Neotype designated by Martin, 1972, Pl. 3, fig. 3. [copied from Chronos database]

Type images:

Original description: Test biserial in the earlier pseudotextulariid stage becoming multiserial when adult. Multiserial part of the test consists of maximum six sets of chamberlets. Chambers increasing rapidly in size as added in the earlier part of the test, the adult part presenting quasi-parallel sides in dorso-ventral view. Sutures distinct, depressed, somehow obscured in the juvenile part due to the addition of calcitic material. Test wall calcitic, macroperforate. Chamber surface ornamented with thicker and discontinuous costae, more or less parallel to the periphery. Test ornamentation distinctly coarser in the earlier part of the test. Periphery broadly to moderately rounded without peripheral structures. Multiple apertures in the adult stage, bordered by thin flanges.

Entries in the Catalog of original descriptions: Guembelina acervulinoides

Geological Range:
Last occurrence (top): within P. hariaensis zone (66.39-67.30Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within Campanian Stage (72.05-83.64Ma, 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: Planoglobulina acervulinoides, synonyms included - Planoglobulina acervulinoides; Planoglobulina brazoensis; Ventilabrella ornatissima;
  • space-time plot :: Samples map :: 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:Moderately roundedaccessory apertures:None
    spiral sutures:Strongly depressedumb depth:N/Awall texture:Coarsely costateshell porosity:Macroperforate: >2.5µm
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:4.0-6.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Egger, J. G. (1900). Foraminiferen und Ostrakoden aus den Kreidemergeln der Oberbayerischen Alpen. Abhandlugen der königlichen bayerischen Akademie Wissenschaften zu München, mathematische - naturwisenschaftliche Classe. 21: 3-230. gs

    Georgescu, M. D. (1995). Upper Cretaceous Heterohelicidae in the Romanian Western Black Sea offshore. Revista Española de Micropaleontología. 27: 91-106. gs

    Nederbragt, A. J. (1991). Late Cretaceous biostratigraphy and development of Heterohelicidae (planktic foraminifera). Micropaleontology. 37: 329-372. gs


    logo

    Planoglobulina acervulinoides compiled by the pforams@mikrotax project team viewed: 22-11-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/pforams/index.php?id=110391 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics