Shashulovski Vladimir Anatolievich RussiaSaratovSaratov Department "GosNIORKh", Saratov, st. Chernyshevskogo N.G. 152директорд-р биол. наукgosniorh@mail.ru Author's articles Rare and Disappearing Species Сephalaspidomorphi and Fish to Be Included Into the Third Edition of Red Book of the Saratov Region Retrospective Analysis and the Current State of the Fauna of the Cyclostomes and Bone Fishes of the Saratov Region