CATALOG OF ORIGINAL DESCRIPTIONS: Blefuscuiana aptiana implana implana 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 aptiana implana implana
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 aptiana implana implana

Citation: Blefuscuiana aptiana implana implana Banner, Copestake & White 1993
Rank: sub-species
Holotype Repository: London, UK; NHM
Holotype number: 52705

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


Original Description: Test about 0.15-0.2mm at its maximum diameter, comprising about 2-3 whorls coiled in a low trochospire. There are 5-6 chambers in each of the penultimate and last whorls. The spiral side is almost flat or slightly convex and the intercameral sutures are moderately depressed, forming angles of about 130-140 degrees at the periphery of the test. The chambers are symmetrical and increase in size gradually with growth, they are typically subglobular to slightly depressed (about 7) as high as long when viewed from the spiral side) in the last whorl, although in some the first 1-2 chambers in the last whorl may be more strongly depressed (about half as high as long). The umbilicus is broadly open and the aperture is a narrow slit. Perforation cones are present on chambers of the last whorl.

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.


Catalog entry for Blefuscuiana aptiana implana implana compiled by the pforams@mikrotax project team viewed: 23-5-2017

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