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Biticinella


Classification: pf_mesozoic -> Rotaliporidae -> Biticinella
Sister taxa: Biticinella, Pseudothalmanninella, Pseudoticinella, Rotalipora, Thalmanninella, Ticinella,
Daughter taxa (blue => in age window 0-300Ma)


Specimens which cannot be assigned to established species

Taxonomy

Citation: Biticinella Sigal, 1956
Rank: Genus
Basionym: Anomalina breggiensis
Type species: Anomalina breggiensis Gandolfi, 1942

Type images:

Original description: Biticinella Sigal 1956:

Entries in the Catalog of original descriptions: Biticinella;

Short diagnosis: Test with early whorls in a flat trochospiral coil, later whorls planispiral and biumbilicate, involute to partially evolute, sutures radial, depressed, peripheral outline lobulate, peripheral margin rounded and noncarinate; wall calcareous, moderately coarsely perforate; aperture a low and commonly asymmetrical, interiomarginal, umbilical-equatorial arch, parts of successive apertures may remain as relict supplementary apertures on one side of the test, the other side with accessory apertures opening into the posterior part of the chamber and bordered by a lip that is a continuation from that of the primary aperture.

Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Total of range of species in this database
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Total of range of species in this database

Plot of occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

References:

Loeblich, A.R., Jr. & Tappan, H., (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York, 1059 pp.


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Biticinella compiled by the pforams@mikrotax project team viewed: 22-10-2017

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