GASTROPODA | XYLODISCULIDAE |
« Small gastropods with a smooth, Planorbis-like shell, and hyperstrophic protoconch. » – A. Warén: “New and little known ‘Skeneimorph’ gastropods from the Mediterranean Sea and the adjacent Atlantic Ocean”, Bollettino Malacologico vol. 27, Milano 1992, p.180. |
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Xylodiscula Marshall, 1988:« Shell minute (diameter up to 1.75mm), subdiscoidal, thin, glassy, umbilicate. Protoconch of 1-1.75 convex whorls, apertural rim with a varix that spreads onto adjacent part of protoconch. Teleoconch of up to 2.4 whorls, slightly or distinctly flattened above periphery, smooth apart from obscure spiral lines and fine collabral growth lines. » – B. A. Marshall: “Skeneidae, Vitrinellidae and Orbitestellidae (Mollusca: Gastropoda) associated with biogenic substrata from bathyal depths off New Zealand and New South Wales”, Journal of Natural History vol.22(4), Abingdon-on-Thames 1988, p.988. |
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