Coccolithus expansus 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.
Gartner, S., 1970. Phylogenetic lineages in the Lower Tertiary genus Chiasmolithus. Proceedings of the North American Paleontological Convention, September 1969. G, pp. 930-957.
Coccolithus expansus
Bramlette & Sullivan, 1961
Middle Eocene
Lodo section, northwestern Fresno County, central California, USA