CATALOG OF ORIGINAL DESCRIPTIONS: Blefuscuiana laculata laculata Banner, Copestake, & White 1993

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> B -> Blefuscuiana -> Blefuscuiana laculata laculata
Other pages this level: B. albiana, B. aptiana depressa depressa, B. aptiana implana implana, B. aptiana orientalis, B. daminiae, B. excelsa cumulus, B. globigerinelloides lobulata, B. hexacamerata, B. kuznetsovae, B. laculata alobata alobata, B. laculata laculata, B. mitra, B. multicamerata, B. occulta quinquecamerata, B. rudis, B. speetonensis, B. speetonensis tunisiensis, B. whittakeri,

Blefuscuiana laculata laculata

Citation: Blefuscuiana laculata laculata Banner, Copestake, & White 1993
Rank: sub-species
Holotype Repository: London, UK; NHM
Holotype number: 52724

Current identification/main database link: Blefuscuiana laculata (Banner, Copestake, & White, 1993)


Original Description: Diagnosis (sensu lato) [see also Blefuscuiana laculata subsp. alobata Banner, Copestake and White, 1993]. - Characterised by having 5 chambers in the last whorl, but with a test that is roughly quadrangular in outline, and by a broad, open umbilicus which the chambers do not overhang significantly. Test about 0.15-0.20mm at its maximum diameter, comprising at least two whorls of chambers coiled in a low trochospire. There are 4-5 chambers in the penultimate whorl and 5 chambers in the final whorl. The spiral side is almost flat to slightly concave. The chambers are symmetrical and increase in size gradually with growth. The chambers are subglobular in the penultimate whorl, and subglobular to slightly depressed (about 2/3 as high as long when viewed from the spiral side) in the final whorl. The umbilicus is broad, but the aperture is a narrow slit. No perforation cones are known. Diagnosis (sensu stricto). - 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.

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.


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Blefuscuiana laculata laculata compiled by the pforams@mikrotax project team viewed: 23-8-2017

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