並列タイトル等Miocene tropical sandy and rocky bottom molluscan assemblages of the Shimo Formation, Uchiura Group, Fukui Prefecture, Central Japan
タイトル（掲載誌）瑞浪市化石博物館研究報告 = Bulletin of the Mizunami Fossil Museum
一般注記Early to Middle Miocene tropical sandy and rocky bottom fauna are obtained from the Shimo Formation of the Uchiura Group, Fukui Prefecture, Central Japan. This fauna can be divided into the Cernina-Aturia Assemblage and the Conus (Chelyconus)–Turbo (Marmorostoma) Assemblage.The Conus (Chelyconus)–Turbo (Marmorostoma) Assemblage is composed mainly of tropical rocky bottom species such as Conus (Chelyconus) tokunagai, C. (Asprella) toyamaensis, Siphonalia sp., Mancinella minoensis, Turbo (Marmorostoma) ozawai, Monodonta kanzakii, Tectus (Rochia) japonicus, Nerita (Amphinerita) ishidae and Cypraea ohiroi.The Conus (Chelyconus)–Turbo (Marmorostoma) Assemblage contains various growth stages of the species. This indicates the fossils are indigenous. These species might have lived in a shallow intertidal to euneritic marine environment near a rocky bottom.The Cernina-Aturia Assemblage contained various growth stages of Cernina akamurai, Pugilina mimasakaensis, Phacosoma akaisiana, Epicodakia yokoyamai, Aturia cubaensis and etc., and intercalated thin mudstone contained Mytilus coruscus and Ostrea cf. denselamellosa. This indicates these species lived in a shallow marine euneritic environment.The Cernina-Aturia Assemblage and the Conus (Chelyconus)–Turbo (Marmorostoma) Assemblage contain various stages of Aturia cubaensis. Aturia cubaensis was likely attacked by predators; therefore a complete fossil did not form.Aturia cubaensis coexists closely with drift wood bored by “Teredo” sp., as buoyancy was left in the shell.Two new species of fossil Mollusca, Monodonta kanzakii and Terebralia kannoi from the Shimo Formation of the Uchiura Group are described.
一次資料へのリンクURLhttps://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=28985&item_no=1&attribute_id=22&file_no=1
著作権情報(c)2009, Mizunami Fossil Museum
copyright(c)2009, Mizunami Fossil Museum
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）