抄録
Permian nautiloids and ammonoids are described from the middle part of the Ochiai Formation distributed in the Kurosawa district of northern Kesennuma City, Southern Kitakami Massif, Northeast Japan. The nautiloids are Tainoceras, Pleuronautilus and Stearoceras. One new species, Tainoceras carinatum, is proposed. The ammonoids are Jilingites, Stacheoceras, Timorites, Pseudagathiceras, Propinacoceras and Eumedlicottia. Jilingites kesennumensis, Timorites takaizumii and Pseudagathiceras ornatum are newly proposed species. Based on the stratigraphic distribution of Timorites, Jilingites and Pseudagathiceras, and the stratigraphic relationship between the cephalopod horizon and Lepidolinabearing limestones, the cephalopod-bearing formation of Kurosawa is considered to be correlatable with the upper Capitanian.
