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Thalmanninella deeckei


Classification: pf_mesozoic -> Rotaliporidae -> Thalmanninella -> Thalmanninella deeckei
Sister taxa: T. appenninica, T. balernaensis, T. brotzeni, T. deeckei, T. evoluta, T. gandolfii, T. globotruncanoides, T. greenhornensis, T. micheli, T. praebalernaensis, T. reicheli, T. sp.

Taxonomy

Citation: Thalmanninella deeckei (Franke, 1925)
Rank: Species
Basionym: Rotalia deeckei
Taxonomic discussion: Dalbiez (1957) was first to transfer to Rotalipora, and noted that the holotype is not definitely known, but may be a broken specimen labeled "Rotalia deeckei n.sp. [copied from Chronos database]

Type images:

Original description: Test circular. Spiral side flat with 2 1/1 -3 whorls, which enlarge rapidly in width. Last volution presents seven to ten narrow, distinctly bent chambers, the sutures of which stand apart as small borders. Umbilical side arched, wide, and with flat umbilicus, the latter with granules of a callus-like test surface. Border sharp, notched, and surrounded by a small ridge. Aperture an opening at the inner margin of the last chamber and slightly covered by a callus-like test material.

Entries in the Catalog of original descriptions: Rotalia deeckei

Geological Range:
Last occurrence (top): within W. archaeocretacea zone (93.52-94.03Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within R. cushmani zone (94.03-95.94Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:Planoconvexaperture:Umbilical-extraumbilical
sp chamber shape:Crescenticcoiling axis:Very lowperiphery:Single keelaperture border:Thin flange
umb chbr shape:Subrectangularumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:Umbilical
spiral sutures:Raised beadedumb depth:Deepwall texture:Smoothshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Raised beadedfinal-whorl chambers:7.0-9.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian–Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. gs

Franke, A. (1925). Die Foraminiferen der pommerschen Kreide. Abhandlugen der Geologischen-Palaeontologischen Inst, Greifswald Univ. 6: 1-96. gs


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Thalmanninella deeckei 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=110543 Go to Archive.is to create a permanent copy of this page - citation notes



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