Foraminifera source details
Sirel, E., (1969), On the discovery of Orduina n. gen., a new genus of family Rotaliidae: MTA Bull, (foreign edition), 73: 145-147
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Orduina Sirel, 1969 † accepted as Laffitteina Marie, 1946 † (original description)
Orduina erki Sirel, 1969 † accepted as Laffitteina erki (Sirel, 1969) † (original description)
Orduina erki var. conica Sirel, 1969 † (original description)
Orduina erki Sirel, 1969 † accepted as Laffitteina erki (Sirel, 1969) † (original description)
Orduina erki var. conica Sirel, 1969 † (original description)