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Kusano Formation

• Type locality: Kusano, Aida town, Mimasaka city, Okayama prefecture
• Coherent formation
• Early Triassic (Shellfishes)

• Sedimentary facies: Marine
• Lithofacies: Sandstone
• Lithofacies (Upper, Minor): Mudstone
• Lithofacies (Lower, Minor): Conglomerate

• Thickness (Upper): ca. 70 - 100 m
• Thickness (Lower): ca. 70 - 100 m

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

• Distribution: Kusano, Aida town, Mimasaka city, Okayama pref.
• Fossils: Ammonoids (Orthoceras sp.), Brachiopods, Gastropods
• Fossils (Shellfishes): Eumorphotis sp., Finna sp., Myalina? sp., Myophoria aff. laevigata, Neobakevellia kambei, Nuculana sp., Pecten sichoticus

• Takemura et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.123-137 DOI