Coccolithus magnicrassus Bukry, 1971b
Bukry, D., 1971b. Cenozoic calcareous nannofossils from the Pacific Ocean. - San Diego Society of Natural History Transactions 16, 303-327.
Romein, A. J. T., 1979. Lineages in Early Paleogene calcareous nannoplankton. Utrecht Micropaleontological Bulletin 22, 1-231.
Coccolithus magnicrassus
Bukry, 1971b
Early Eocene
DSDP Leg 6, Site 47, Crest of Shatsky Plateau, North Pacific