pforams@mikrotax - Blefuscuiana pforams@mikrotax - Blefuscuiana


Classification: pf_mesozoic -> Praehedbergellidae -> Blefuscuiana
Sister taxa: Blefuscuiana, Gorbachikella
Daughter taxa (time control age-window is: 0-800Ma)
Blefuscuiana alobata

Blefuscuiana cumulus

Blefuscuiana daminiae

Blefuscuiana depressa

Blefuscuiana implana

Blefuscuiana laculata

Blefuscuiana sp.
Specimens which cannot be assigned to established species


Citation: Blefuscuiana Banner & Desai 1988
taxonomic rank: Genus

Original description: Test a low trochospiral of two or more whorls, typically with six or seven chambers in the final whorl, but there may be as few as five or as many as eight. The chambers are subglobular or depressed, reniform or ovoid; they are not radially elongate; spiral side evolute, umbilical side partly involute; aperture intra-extraumbilical, reaching to or even slightly over the periphery of the earlier whorl; the aperture possesses a porticus, of uniform breadth throughout or broadest posteriorly; relict apertures and portici are usually visible in the umbilical parts of the chambers of about half of the last whorl. The wall is microperforate and its surface is smooth, lacking muricae.

Entries in the Catalog of original descriptions: Blefuscuiana

Geological Range:
Last occurrence (top): at top of Aptian Stage (100% up, 113.2Ma, in Albian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Barremian Stage (121.40-126.50Ma, base in Barremian stage). Data source: Total of ranges of species in this database

Plot of range and occurrence data:


Banner, F. T. & Desai, D. (1988). A review and revision of the Jurassic-Early Cretaceous Globigerinina,with especial reference to the Aptian assemblages of Speeton (North Yorkshire, England). Journal of Micropalaeontology. 7: 143-185. gs


Blefuscuiana compiled by the pforams@mikrotax project team viewed: 17-7-2024

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