The present paper summarizes the author's long-term study of the Jurassic and Cretaceous faunas of Novaya Zemlya. It is based both on literary sources, subjected here to critical revision, and on the collections made by many expeditions that visited Novaya Zemlya ....

Since 1935, the author has received abundant paleontological material from Jurassic and Cretaceous sediments of the Soviet Arctic. The author has been studying this material, which was constantly replenished with new collections, until very recently. In the present article, the results of the study of ammonites from the Kellovenian deposits of the Soviet Arctic are collected. The publication of these results is necessary especially because, despite the wide development of paleontological work in this area, there is no detailed description of its Kellovian fauna in the literature so far (except for the very brief description of several species in the works of D. N. Sokolov and A. P. Pavlov).