Height of holotype, 1.68 mm.

Shell small, skeneimorph, heavily granulate, loosely coiled, and colourless. Larval shell consisting of about half a whorl, diameter 320 pm, strongly convex, with a fine, sharp granulation of short, small, branching ridges. Adult teleoconch consisting of about 1.8, very loosely coiled whorls, connected to the preceding whorl only for a very short distance and without change of the curvature of the whorl. Last 1-2/10 whorl disjunct in adult specimens. Sculpture of small sharp tubercles, those on first part of teleoconch to some extent arranged along axial wrinkles, later randomly and evenly scattered all over the shell. Umbilicus narrow and oblique. Aperture almost perfectly round.
Radula. (4-6) - 1? - 1 - 1? - (4-6). Central tooth ovate, pointed, membranaceous with slightly thicker cutting edge, equipped with a central cusp and about 4 small and narrow teeth on its sides. Lateral tooth flattened, claw-like with main cusp and 1-3 small teeth on each side. Marginals clawlike, slender, most lateral ones partly united basally, inner ones with small, elongated basal plates. Apical cusp small, 4-6 lateral barbs of same size on each side along apical 1/6 of tooth.

Granigyra granulifera Waren, 1992
Distribution: Bay of Biscay to Madeira and the central Mediterranean Sea (WAREN, 1992), Little Meteor Seamount (this study), 700-4300 m. Remarks: Granigyra granulifera can be differentiated from G. arenosa Waren, 1993 by its finer granular sculpture.

From the Bay of Biscay to Madeira and the central Mediterranean in about 700 - 4300 m depth

Granigyra granifera differs from the type species of Granigyra by having relatively finer granulation. Granigyra granulifera differs from its European congeners in having a relatively less fragile shell, coarser granulation, partly disjunct final whorl in adult specimens, and a deeper suture.
Radula-differences: The outer lateral tooth is broad and solid compared to the marginals and the central tooth is very thin and mamebranaceous. The inner lateral tooth seems, however, to be absent in this species, although it is present (but small and inconspicuous) in G. pruinosa.