A sinistral (reversed-coiled) specimen of Vallonia pulchella is recorded from a Quaternary deposit near Serényfalva, Hungary. Although Vallonia specimens of the exclusively dextral genus Vallonia are encountered in large quantities, both Recent and fossil, this seems to be first reliable record of a sinistral specimen.

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CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel")

Nederlandse Malacologische Vereniging

B. Páll-Gergely, & B. Szappanos. (2019). A sinistral Vallonia pulchella (O.F. Müller, 1774) shell from a Hungarian Quaternary deposit (Gastropoda, Valloniidae). Basteria, 83(1-3), 33–34.