Class: Rotaliata    Subclass: Rotaliana    Order: Nummulitida    Family: Nummulitidae
Operculina d'Orbigny, 1826

Operculina complanata
Defrance, 1824
identified by scientist   
Quaternary
Banda, Timor and Arafura Sea

Operculina gaimardi
Deshayes, 1832
identified by scientist   
Quaternary
Micronesia + Philippine Basin

Operculina philippinensis
Cushman, 1921
identified by M. Hesemann   
Quaternary
off Indonesia and Malaysia

Operculina subgranulosa
(d'Orbigny, 1850)
identified by M. Hesemann   
Quaternary

Operculina sp.

identified by scientist   
Quaternary