holotype: B. laculata laculata
holotype: B. laculata laculata
paratype: B. laculata laculata
paratype: B. laculata laculata
Taxonomy
holotype: B. laculata laculata
holotype: B. laculata laculata
paratype: B. laculata laculata
paratype: B. laculata laculataOriginal description: 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 laculata, Blefuscuiana laculata
Character matrix
| test outline: | Subquadrate | chamber arrangement: | Trochospiral | edge view: | Concavo-convex | aperture: | - |
| sp chamber shape: | Globular | coiling axis: | 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: | 4.5-5.5 | N.B. These characters are used for advanced search. N/A - not applicable | |||
Geological Range:
Last occurrence (top): within Barremian Stage (121.40-126.50Ma, top in Barremian stage). Data source: [copied from Chronos database]
First occurrence (base): within Barremian Stage (121.40-126.50Ma, base in Barremian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
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. gsReferences:
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Blefuscuiana laculata compiled by the pforams@mikrotax project team viewed: 23-1-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=110030 Go to Archive.is to create a permanent copy of this page - citation notes |
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