Morphological Deformities in Anuran Amphibians from the Khoper River Valley in the “Privolzhskaya Lesostep’” Nature Reserve and Adjacent Territories

We would like to replace old acknowledgements with: “Authors are grateful to A. Dubois, S.N. Litvinchuk and V.L. Vershinin for valuable advices about classification of anomalies. We are thankful to A.N. Dobrolyubov for opportunity to work on the territory of nature reserve «Privolzhskaya Lesostep’».