Thoracosphaera prolata Bukry & Bramlette 1969b
Bukry, D., Bramlette, M. N., 1969b. Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. Tulane Studies in Geology 7, 131-142.
Thoracosphaera prolata
Bukry & Bramlette, 1969d
Middle Eocene
Scripps core 116P, Pacific Ocean