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Kojakui-sho

• Type locality: Tajima, Tomioka city, Gunma prefecture
• Coherent formation
• Miocene

• Sedimentary facies: Marine
• Sedimentary facies: Reef covering sediments
• Lithofacies (Upper): Muddy sandstone
• Lithofacies (Middle): Conglomerate
• Lithofacies (Lower): Quartz porphyry

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Tajima, Tomioka city, Gunma pref.
• Fossils: Bivalves (Oysters), Gastropods, Decapods, Woods
• Fossils (Foraminifera): Globigerina angustiumbilicata Bolli, Globigerina praebulloides Blow, Globigerinita glutinata (Egger), Globigerinoides bollii (Blow), Praeorbulina sicana (De Stefani)
• Fossils (Ostracods): Acanthocythereis cf. quadrata, Acanthocythereis sp., Ambtonia sp., Argilloecia sp., Copytus sp., Cornucoquimba saitoi, Krithe sp., Laperousecythere sp., Macrocypris sp., Neonesidea sp., Pacambocythere aff. similis, Paracypris sp., Paradoxostomatidae gen. et sp. indet, Pontocypris sp., Propontocypris sp., Sclerochilus? sp., Spinileberis sp., Trachyleberis? sp., Trachyleberididae gen. et sp. indet

• Tanaka et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.1, pp.17-24 DOI