pforams@mikrotax - Blefuscuiana alobata

pforams@mikrotax - Blefuscuiana alobata pforams@mikrotax - Blefuscuiana alobata

Blefuscuiana alobata

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

Taxonomy

Citation: Blefuscuiana alobata Banner, Copestake & White, 1993

Rank: Species

Basionym: Blefuscuiana laculata alobata

Type images:

holotype: B. laculata alobata
holotype: B. laculata alobata
paratype: B. laculata alobata
paratype: B. laculata alobata
paratype: B. laculata alobata
paratype: B. laculata alobata

Original description: Diagnosis. - A subspecies of Blefuscuiana laculata Banner, Copestake and White, 1993, characterised by having intercameral sutural angles at the periphery of about 130-145 degrees; the test surface lacks perforation cones.

Entries in the Catalog of original descriptions: Blefuscuiana laculata alobata

Character matrix
test outline: - chamber arrangement: Pseudoplanispiral edge view: - aperture: -
sp chamber shape: - coiling axis: Very low periphery: - aperture border: -
umb chbr shape: - umbilicus: - periph margin shape: - accessory apertures: -
spiral sutures: Moderately depressed umb depth: - wall texture: - shell porosity: -
umbilical or test sutures: Moderately depressed final-whorl chambers: 4.0-4.5 N.B. These characters are used for advanced search. N/A - not applicable

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 range and occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Blefuscuiana

References:

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. gs

Blefuscuiana alobata compiled by the pforams@mikrotax project team viewed: 7-6-2023

Taxon Search:

Advanced Search

AphiaID: 1035317 Nomenclatural data on WoRMS
Short stables page link: https://mikrotax.org/pforams/index.php?id=110025 Go to Archive.is to create a permanent copy of this page - citation notes

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test outline:	-	chamber arrangement:	Pseudoplanispiral	edge view:	-	aperture:	-
sp chamber shape:	-	coiling axis:	Very low	periphery:	-	aperture border:	-
umb chbr shape:	-	umbilicus:	-	periph margin shape:	-	accessory apertures:	-
spiral sutures:	Moderately depressed	umb depth:	-	wall texture:	-	shell porosity:	-
umbilical or test sutures:	Moderately depressed	final-whorl chambers:	4.0-4.5	N.B. These characters are used for advanced search. N/A - not applicable