Pseudotextularia nuttalli

Classification: pf_mesozoic -> Heterohelicidae -> Pseudotextularia -> Pseudotextularia nuttalli
Sister taxa: P. elegans, P. intermedia, P. nuttalli, P. sp.,


Citation: Pseudotextularia nuttalli (Voorwijk, 1937)
Rank: Species
Basionym: Guembelina nuttalli
Synonyms: Pseudotextularia browni; Pseudotextularia elongata; Guembelina plummerae; Guembelina santonica pseudoobtusa; Guembelina santonica; Guembelina subplummerae; Pseudotextularia cushmani
Taxonomic discussion: no holotype image available in E+M online catalogue. Just some illustrations of non-holotype specimens. [copied from Chronos database]

Type images:

Original description: Test biserial, bi-concave to bi-convex in edge view. Sutures depressed, chambers clearly deeper than wide. Last pair of chambers of bi-concave specimens ovate to subglobular in edge view. Surface finely costate; aperture a wide, low arc.

Entries in the Catalog of original descriptions: Guembelina nuttalli, Pseudotextularia browni, Pseudotextularia elongata, Guembelina plummerae, Guembelina santonica pseudoobtusa, Guembelina santonica, Guembelina subplummerae, Pseudotextularia cushmani

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 D. concavata zone (86.71-89.91Ma, base in Turonian 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: Pseudotextularia nuttalli, synonyms included - Guembelina santonica; Guembelina santonica pseudoobtusa; Guembelina subplummerae; Pseudotextularia browni; Pseudotextularia cushmani; Pseudotextularia elongata; Pseudotextularia nuttalli; Pseudotextularia plummerae; Pseudotextularia pseudoobtusa; Pseudotextularia santonica;
  • space-time plot :: Samples map :: Parent: Pseudotextularia

    Character matrix

    test outline:Subtriangularchamber arrangement:Biserialedge view:Compressedaperture:Interiomarginal
    sp chamber shape:Reniformcoiling axis:N/Aperiphery:N/Aaperture border:Thin flange
    umb chbr shape:Reniformumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:None
    spiral sutures:Moderately depressedumb depth:N/Awall texture:Finely costateshell porosity:Microperforate: <1µm
    umbilical or test sutures:Moderately depressedfinal-whorl chambers:2.0-2.0 N.B. These characters are used for advanced search. N/A - not applicable


    Nederbragt, A. J. (1989b). Maastrichtian Heterohelicidae (Planktonic Foraminifera) from the North West Atlantic. Journal of Micropalaeontology. 8(2): 183-206. 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

    Voorwijk, G. H. (1937). Foraminifera from the Upper Cretaceous of Habana, Cuba. K. Ned. Akad. Wet., Proc. sec. sci.. 40: 190-198. gs


    Pseudotextularia nuttalli compiled by the pforams@mikrotax project team viewed: 13-12-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110471 Go to Archive.is to create a permanent copy of this page - citation notes

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