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Range DescriptionThis species is distributed from southern and central Baikal, with a type locality of Kultuk (southern Baikal) (Sitnikova et al. 2004 in Kantor et al., 2009). This species was originally collected in Kultuk in 1869, but there is only one sample of shells determined by Westerlund as Valvata bathybia from the nothern part of Western Siberia. This sample was collected in 1895 and to date is the only record for this species outside Lake Baikal. Most probably, this record is based on misidentification, however, the true identity of these shells should be checked (M.V. Vinarski pers. comm. 2010).