Chiphragmalithus achylosus Stover, 1966
Perch-Nielsen, K., (1986): New Mesozoic and Paleogene calcareous nannofossils. - Eclogae Geologicae Helvetiae. 79(3): 835-847.
Stover, L. E., (1966): Cretaceous coccoliths and associated nannofossils from France and the Netherlands. - Micropaleontology. 12(2): 133-167.