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Biticinella breggiensis


Classification: pf_mesozoic -> Rotaliporidae -> Biticinella -> Biticinella breggiensis
Sister taxa: B. breggiensis, B. subbreggiensis, B. sp.

Taxonomy

Citation: Biticinella breggiensis (Gandolfi, 1942)
Rank: Species
Basionym: Anomalina breggiensis
Taxonomic discussion: Accessory apertures on umbilical and spiral sides. Accessory apertures are rarely seen on the spiral side unlike the umbilical side where they are always present. Slightly pustulose wall with conspicuous perforation.

Type images:

Original description: Translated from Italian: "Shell of scaphoid shape, early chambers coiled trochospiral and later become planispiral, peripheral margin wide and rounded, chambers regularly increasing in size, wide, low and a little convex, radial sutures, straight, weakly depressed; Last chamber somewhat convex, aperture semilunar and wide opening in front of the last chamber. Biumbilicate, coiling moderately involute with the external chambers that cover part of the internal ones. Shell with particularly coarse pores, so that the appearance is very rough. Number of final whorl chambers 9-10."

Entries in the Catalog of original descriptions: Anomalina breggiensis

Geological Range:
Last occurrence (top): within P. appenninica zone (100.50-101.92Ma, top in Albian stage). Data source: [copied from Chronos database]
First occurrence (base): within T. praeticinensis zone (106.98-107.39Ma, base in Albian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix

test outline:Circularchamber arrangement:Pseudoplanispiraledge view:Hourglassaperture:Equatorial
sp chamber shape:Inflatedcoiling axis:Very lowperiphery:N/Aaperture border:Thick porticus
umb chbr shape:Inflatedumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Umbilical
spiral sutures:Moderately depressedumb depth:Deepwall texture:Moderately pustuloseshell porosity:Macroperforate: >2.5┬Ám
umbilical or test sutures:Moderately depressedfinal-whorl chambers:7.0-9.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Gandolfi, R. (1942). Ricerche micropaleontologiche e stratigraphfiche sulla Scaglia e sul flysch Cretacici dei Dintorni di Balerna (Canton Ticino). Rivista Italiana di Paleontologia. 48: 1-160. gs

Lipson-Benitah, S. & Almogi-Labin, A. (2004). Aptian planktonic foraminifera from Israel. Israel Journal of Earth Sciences. 53(1): 27-46. gs

Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs


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Biticinella breggiensis compiled by the pforams@mikrotax project team viewed: 7-3-2021

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110021 Go to Archive.is to create a permanent copy of this page - citation notes



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