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Pseudotextularia nuttalli


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

Taxonomy

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 range and occurrence data:

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

References:

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

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. Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen. 40: 190-198. gs


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Pseudotextularia nuttalli compiled by the pforams@mikrotax project team viewed: 20-10-2020

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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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