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Pseudothalmanninella klausi


Classification: pf_mesozoic -> Rotaliporidae -> Pseudothalmanninella -> Pseudothalmanninella klausi
Sister taxa: P. klausi, P. subticinensis, P. tehamaensis, P. ticinensis, P. sp.

Taxonomy

Citation: Pseudothalmanninella klausi (Lehmann, 1966)
Rank: Species
Basionym: Rotalipora klausi

Type images:

Original description: (Translated from French) Biconvex test formed by three trochospiral whorls. More convex in the spiral side than in the umbilical side. Eight to nine chambers in the last whorl. Chambers of the last whorl having roughly same size. Chamber increase in size is moderatly lobate. Umbilical sutures are radial with an accessory aperture located in the narrow umbilicus. The primary aperture is interiomarginal, umbilical-extraumbilical.

Entries in the Catalog of original descriptions: Rotalipora klausi


Emended description: (according to Gonzalez Donoso et al. 2006 This species is larger and with an higher trochospire than Pseudothalmanninella ticinensis. Although the umbilical sutures are depressed, there are periumbilical ridges (not represented in the drawing of Klaus, but clearly visible in the figured specimen, i.e., the holotype of P. klausi, as observed recently by us). [copied from Chronos database]

Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: [copied from Chronos database]
First occurrence (base): within P. appenninica zone (100.50-101.92Ma, base in Albian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:Inequally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:coiling axis:Moderateperiphery:aperture border:
umb chbr shape:umbilicus:Narrowperiph margin shape:accessory apertures:Umbilical
spiral sutures:umb depth:Deepwall texture:shell porosity:
umbilical or test sutures:final-whorl chambers:8.0-9.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Lehmann, R. (1966b). Les foraminiferes pelagiques du Cretace du Bassin cotier de Tarfaya. I. Planomalinidae et Globotruncanidae du Sondage de Puer Cansado (Albien superieur. Cenomanien inferieur). Notes et Memoires du Service Geologique du Maroc. 175: 153-167. gs


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Pseudothalmanninella klausi compiled by the pforams@mikrotax project team viewed: 23-11-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110474 Go to Archive.is to create a permanent copy of this page - citation notes



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