Image source: Cushman, J.A. 1915. A Monograph of the Foraminifera of the North Pacific Ocean. Part V. Rotaliidae. Bull. U.S. Nation. Mus 71: vii+87 pp.+31 pls.
Image source: Cushman, J.A. 1915. A Monograph of the Foraminifera of the North Pacific Ocean. Part V. Rotaliidae. Bull. U.S. Nation. Mus 71: vii+87 pp.+31 pls.
