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Cyclolithus? robustus Bramlette & Sullivan, 1961
Aubry, M. -P., Bord, D., 2009. Reshuffling the cards in the photic zone at the Eocene/Oligocene boundary. In: Koeberl, C., Montanari, A. (eds), The Late Eocene Earth-Hothouse, Icehouse, and Impacts. Geological Society of America, Special Papers 452, 279-301.
Bramlette, M. N., Sullivan, F. R., 1961, Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology 7(2), 129-188.
Cyclolihus? robustus
Bramlette & Sullivan, 1961
Late Paleocene
Lodo section, northwestern Fresno County, central California, USA