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Linked specimens: London, UK; NHM (PM PF 52735)
Current identification:
Original Description
Diagnosis: Characterized by the presence of perforation cones, low trochospire, relatively large number of chambers (about 6½) in the penultimate whorl, gradual opening of the spire and high-arched aperture.
Description: Test about 0.25mm at its maximum diameter, consisting of two whorls of chambers coiled in a low trochospire. There are about 6½ chambers in the penultimate and 4½ in the last whorl. The spiral side is only slightly convex, with intercameral sutures forming intercameral angle of sutural depression at the periphery of about 145°. The chambers themselves are symmetrical and increase in size gradually with growth, those (excluding the final chamber) in the last whorl become depressed , being about half as high as long (compared with about 2/3 as high as long in the final chamber) on the spiral side. The umbilicus is small and the aperture is a high arch, with a very narrow porticos. Perforation cones are visible on chambers of the last whorl.
Etymology:
Extra details from original publication
DISTRIBUTION. Central North Sea (Well 20/2-2, 8370 m).
STRATIGRAPHY. Late Barremian
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 pseudosigali compiled by the pforams@mikrotax project team viewed: 19-5-2026
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