Discolithus pulcheroides Sullivan, 1964
Sullivan, F. R., 1964. Lower Tertiary nannoplankton from the California Coast Ranges. I. Paleocene. University of California Publications in Geological Sciences 44, 163-227.
Báldi-Beke, M. 1971. The Eocene nannoplankton of the Bakony Mountains, Hungary. Annales Instituti Geologici Publici Hungarici. 54(4): 13-38
                    Discolithus pulcheroides
                                Sullivan, 1964
    
                
Early Eocene
Las Juntas Formation, Selby Smelter-Pacheco Syncline Region, Contra Costa County, California, USA