Gartnerago zipperum Bukry 1969
Bukry, D., (1969): Upper Cretaceous coccoliths from Texas and Europe. - University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79.
Self-Trail, J., (1999): Some new and rarely documented Late Cretaceous calcareous nannofossils from subsurface sediments in South Carolina.- Journal of Paleontology. 73(5): 952-963.