Litvinchuk Spartak N. RussiaSaint PetersburgInstitute of Cytology, Russian Academy of Sciences , 4 Tikhoretsky Prospekt, St. Petersburg 194064litvinchukspartak@yandex.ru Author's articles In commemoration of Jury M. Rosanov (1938–2021) Hybridization and distribution of cryptic species of green toads (Bufotes) (Bufonidae, Amphibia) in Republic of Dagestan (Russia) Natural polyploidy in reptiles Karyotype diversity of Palearctic toads of the family Bufonidae (Anura, Amphibia)