CATALOG OF ORIGINAL DESCRIPTIONS: Blefuscuiana daminiae 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 daminiae
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 daminiae

Citation: Blefuscuiana daminiae Banner, Copestake, & White 1993
Rank: Species
Type locality: Holotype (fig. 6) and paratype (fig. 3) from a depth between 12,830 and 12,840 ft in Well 15/30-3; paratype (fig. 1) from a depth of 8300 ft and unfigured paratype (no. P52700) from a depth of 8250 ft in Well 20/2-2; unfigured paratype (no. P52697) from
Type level: Uppermost Valhall Formation
Holotype Repository: London, UK; NHM
Holotype number: P52696

Current identification/main database link: Blefuscuiana daminiae Banner, Copestake, & White 1993


Original Description: Characterised by having 5 chambers in the last whorl of which only part of the first is seen ventrally, thereby giving an overall subquadrangular appearance to the test and by a deep umbilicus, resulting from the distinct overhang of the chambers in the last whorl. Adult test about 0.20mm at its maximum diameter, comprising at least 2 whorls coiled in a low trochospire. There are 5 chambers in each of the penultimate and last whorls. The spiral side is slightly concave to slightly convex and the intercameral sutures are moderately depressed, forming intercameral angles of about 140-150 degrees at the periphery of the test. The chambers are symmetrical and increase gradually in size with growth. They are subglobular in the penultimate whorl and depressed to slightly depressed (about 1/2 - 2/3 as high as long, when viewed from the spiral side) in the last tum of the spire, with the first two chambers in the latter tending to be more depressed than the last three. The final chamber may be almost as high as long. The umbilicus is small and deep; the aperture appears to be a narrow slit.

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 daminiae compiled by the pforams@mikrotax project team viewed: 22-8-2017

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