Rhabdosphaera truncata Bramlette & Sullivan, 1961
Bramlette, M. N. & Sullivan, F. R., (1961): Coccolithophorids and related nannoplankton of the Early Tertiary in California. - Micropaleontology. 7(2): 129-188.
Varol, O., (1989): Eocene calcareous nannofossils from Sile (northwest Turkey). - Revista Española de Micropaleontología. 21: 273-320.
Rhabdosphaera truncata
Bramlette & Sullivan, 1961
Early Eocene
Lodo section, northwestern Fresno County, central California, USA