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Linked specimens: London, UK; NHM (PM PF 52758)
Current identification:
Original Description
Description: Adult test about 0.20 mm at its maximum diameter and comprises at least two whorls of chambers coiled in a low trochospire. There are about 5 chambers in the penultimate whorl, reducing to 4 or 4½ chambers in the last whorl. The spiral side is almost flat or slightly convex and the intercameral sutures are moderately depressed; the intercam- eral angle of sutural depression at the periphery is about 135°. The chambers themselves are symmetrical and increase sig- nificantly in size with growth, those (excluding the final chamber) in the last whorl become slightly depressed, being about ⅔ as high as long when viewed from the spiral side. The final chamber may be only slightly longer than high. The umbilicus is shallow and measures about 0.35 mm in diameter. The aperture appears to be a narrow slit and perforation cones are visible at least on chambers of the last whorl.
Etymology:
Extra details from original publication
Distribution. Central North Sea: Well 16/28-6RE(4000 m, 4075m, 4204m and 4275 m); Well 20/2-2 (8300 m).
Stratigraphy. Early Barremian to Late Aptian.
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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Praehedbergella grigelisi perforare compiled by the pforams@mikrotax project team viewed: 19-5-2026
Short stable page link: https://mikrotax.org/pforams/index.php?id=132015 Go to Archive.is to create a permanent copy of this page - citation notes |
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