Chiphragmalithus quadrata 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.
Bukry, D., 1973e. Low-latitude coccolith biostratigraphic zonation. Initial Reports of the Deep Sea Drilling Project 15, 685-703.
Chiphragmalithus quadratus
Bramlette & Sullivan, 1961
Middle Eocene
Lodo section, northwestern Fresno County, central California, USA