Foraminifera source details
Cushman, J.A. 1926. Miocene species of Nonionina from California. Contr. Cushman Lab. Foram. Res. 1: 89-92.
183818
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Nonionina costifera Cushman, 1926 † accepted as Pseudononion costiferum (Cushman, 1926) † (original description)
Nonionina incisa Cushman, 1926 † accepted as Nonion incisum (Cushman, 1926) † (original description)
Nonionina mediocostata Cushman, 1926 † accepted as Nonion mediocostatum (Cushman, 1926) † (original description)
Nonionina incisa Cushman, 1926 † accepted as Nonion incisum (Cushman, 1926) † (original description)
Nonionina mediocostata Cushman, 1926 † accepted as Nonion mediocostatum (Cushman, 1926) † (original description)