pforams@mikrotax - Thalmanninella gandolfii pforams@mikrotax - Thalmanninella gandolfii

Thalmanninella gandolfii

Classification: pf_mesozoic -> Rotaliporidae -> Thalmanninella -> Thalmanninella gandolfii
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.


Citation: Thalmanninella gandolfii (Luterbacher and Premoli Silva, 1962)
taxonomic rank: Species
Basionym: Rotalipora appenninica gandolfii
Taxonomic discussion: Transitional between R. appenninica and R. globotruncanoides. [copied from Chronos database]

Type images:

Original description: Translation from French: some specimens from the R. appenninica appenninica type level show that the keel extended along the sutures reaching the periumbilical ridges of each chamber. In addition, the last two chambers gradually deepen towards the umbilicus.

Entries in the Catalog of original descriptions: Rotalipora appenninica gandolfii

Character matrix
test outline:Subcircularchamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Petaloidcoiling axis:Low-moderateperiphery:Single keelaperture border:Thin lip
umb chbr shape:Trapezoidalumbilicus:Wideperiph margin shape:Subangularaccessory apertures:Umbilical
spiral sutures:Raised beadedumb depth:Shallowwall texture:Finely pustuloseshell porosity:Macroperforate: >2.5µm
umbilical or test sutures:Raised beadedfinal-whorl chambers:5-7 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within T. globotruncanoides zone (98.85-100.50Ma, top in Cenomanian 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:


Leckie, M. (1984). Mid-Cretaceous planktonic foraminiferal biostratigraphy off Central Morocco, Deep Sea Drilling Project Leg 79, Sites 545 and 547. Initial Reports of the Deep Sea Drilling Project. 79: 579-620. gs

Luterbacher, H. & Premoli Silva, I. (1962). Note préliminaire sur une révison du profil de Gubbio, Italie. Rivista Italiana di Paleontologia e Stratigrafia. 68(2): 253-288. gs

Petrizzo, M. R. & Huber, B. T. (2006). Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean). Journal of Foraminiferal Research. 36: 166-190. gs


Thalmanninella gandolfii compiled by the pforams@mikrotax project team viewed: 14-4-2024

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