Cyclagelosphaera rotaclypeata Bukry, 1969
Bukry, D. 1969. Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles 51 (Protista 2): 1-79.
Cyclagelosphaera rotaclypeata
Bukry, 1969
Middle Santonian
Lake Vaxahacie, Ellis County, Texas, USA