Affiliation: | 1. Department of Ichthyology and Hydrobiology, St. Petersburg State University, 16 linia V.O., d. 29, 199178, St. Petersburg, Russia 2. Archaeological Centre of the Pskov Region, Rizhsky pr., 55-37, 180024, Pskov, Russia 3. Institute of Anatomy, Histology and Embryology, University of Veterinary Medicine, Veterinaerplatz 1, 1210, Vienna, Austria
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