A new genus and species euselachian Desinia radiata Ivanov gen. et sp. nov. from the Middle and Upper Permian deposits of European part of Russia is described based on material included the numerous teeth and small fragment of skull with jaw cartilages, teeth and scales. The new taxon is closely related with the genus Sphenacanthus and attributed to the family Sphenacanthidae. The holotype of other euselachian
Xenosynechodus egloni is redescribed.