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Monmyoji Alternation of Sandstone and Mudstone Member
- Coherent formation
- early - late Miocene
- Sedimentary facies: Marine
- Lithofacies: Interbedded sandstone and mudstone
- Lithofacies (Minor): Lapilli tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Yatsuo town - Makimurogawa river - Yunoki - Yamadagawa river, Toyama city, Toyama pref.
- Fossils: Balanus sp., Foraminifera (Miogypsina ozawai, Operculina complanata), Bryozoans
- Fossils (Shellfishes): Acteocina sp., Aequipecten yanagawaensis, Anadara daitokudoensis, Anadara kakehataensis, Anadara kurosedaniensis, Anisocorbula sp., Anomia sp., Asaphis sp., Babylonia sp., Batillaria yamanarii, Bittium sp., Callista sp., Calyotrea sp., Cardium? sp., Cerithidea miofluviatilis, Chlamys sp., Clavus sp., Corbicula sp., Crassatellites sp., Cymatium sp., Dosinia sp., Fobulina sp., Gari sp., Glycymeris sp., Inquistor sp., Joanisiella sp., Latona sp., Littorinopsis miodelicatula, Lucinisca k-hataii, Macoma inconglura, Mactra sp., Meretrix sp., Mitrella sp., Murex sp., Myadolla cfr. japonica, Mya japonica, Nassarius simizui, Natica sp., Nipponomarcia nakamurai, Olivella consoblina, Ostrea denslamellosa, Ostrea gravitesta, Propeamussium tateiwai, Protrotella yuantaniensis, Psammocola sp., Shiphonalia prespadicea, Silliquaria sp., Siphonalia sp., Siratoria sp., Syrnola sp., Tiberia sp., Venericardia sp., Vicarya yokoyamai, Vicaryella notoensis
- Sakamoto and Nozawa (1960) Yatsuo, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 8p.)