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Nyoraida Formation

• Coherent formation
• Early Cretaceous

• Sedimentary facies: Lacustrine
• Lithofacies (Bottom): Tuffaceous sandstone
• Lithofacies (Bottom, Minor): Conglomerate

• Upper limit: Partly unconformity (Lower Wakamiya Formation)
• Lower limit: Unconformity (Sengoku Formation)

• Distribution: Otaraguchi, Miyawaka city, Fukuoka pref.
• Fossils (Limestone gravels): Critonids
• Fossils (Limestone gravels, Fusulinids): Pseudofusulina, Parafusulina, Neoschwagerina aff. cheni hsinghaiana

• Ota et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.5, pp.289-298 DOI