WoRMS Photogallery
Spirillina concavoconvexa Galloway & Ryniker, 1930
Description Galloway, J. J.; Ryniker, C. (1930). Foraminifera from the Atoka formation of Oklahoma. Oklahoma Geological Survey, Circulars. 21: 1-36., available online at http://ogs.ou.edu/docs/circulars/C21.pdfpage(s): p. 7, pl. 1, fig. 2. PNG file - 38.85 kB - 429 x 177 pixels added on 2026-10-191 viewWoRMS taxa Spirillina concavoconvexa Galloway & Ryniker, 1930 †checked Le Coze, François 2026-10-19
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