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Operculina complanata

Operculina complanata (Defrance in Blainville, 1822)

• Modern species
• Habitat: Marine

• Classification
• kingdom Chromista, infrakingdom Rhizaria, phylum Foraminifera, class Globothalamea, order Loftusiida, family Nummulitidae, genus Operculina

• Distribution
• Miocene: Akita, Niigata, Ishikawa, Ibaraki, Gifu

• Subtaxa
• O. c. var. japonica