Blefuscuiana laculata

Classification: pf_mesozoic -> Praehedbergellidae -> Blefuscuiana -> Blefuscuiana laculata
Sister taxa: B. alobata, B. cumulus, B. daminiae, B. depressa, B. implana, B. laculata, B. sp.,


Citation: Blefuscuiana laculata Banner, Copestake, & White, 1993
Rank: Species
Basionym: Blefuscuiana laculata Banner, Copestake, & White, 1993

Type images:

Original description: Blefuscuiana laculata subsp. laculata Banner, Copestake, & White 1993: Blefuscuiana laculata (sensu stricto).
Diagnosis. Characterised by having a roughly quadrangular test outline, an open umbilicus, and intercameral sutures at the periphery of the test which form angles of about 120-135 degrees; the test surface lacks perforation cones.

Entries in the Catalog of original descriptions: Blefuscuiana laculata; Blefuscuiana laculata laculata;

Geological Range:
Last occurrence (top): within Barremian Stage (126.30-130.77Ma, top in Barremian stage). Data source: [copied from Chronos database]
First occurrence (base): within Barremian Stage (126.30-130.77Ma, base in Barremian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

Character matrix

test outline:Subquadratechamber arrangement:Trochospiraledge view:Concavo-convexaperture:-
umb chamber shape:-coiling axis:Lowperiphery:-aperture border:-
sp chbr shape:Globularumbilicus:-periph margin shape:-accessory apertures:-
umbilical or test sutures:Moderately depressedumb depth:-wall texture:-shell porosity:-
spiral sutures:Moderately depresseddiameter mm:0.15-0.20width mm:breadth mm:
final-whorl chambers:4.5-5.5


Banner, F.T.; Copestake, P. & White, M.R., (1993). Barremian-Aptian Praehedbergellidae of the North Sea area: a reconnaisance. Bulletin of the Natural History Museum, London (Geology), 49: 1-30.


Blefuscuiana laculata compiled by the pforams@mikrotax project team viewed: 22-3-2018

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