Foraminifera source details
Cushman, J. A.; Stainforth, R. M. (1946). A new species of Amphistegina from the Eocene of Ecuador. Contr. Cushman Lab. Foram. Res. 22: 117-119.
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Cushman, J. A.; Stainforth, R. M.
1946
A new species of Amphistegina from the Eocene of Ecuador
Contr. Cushman Lab. Foram. Res.
22: 117-119
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Amphistegina elliotti Cushman & Stainforth, 1946 † accepted as Helicostegina wellsi (Cole & Bermúdez, 1944) † (original description)