Tranolithus manifestus Stover, 1966
Pontilithus Gartner, 1968
Barringtonella Black, 1972
Black, M., (1972): British Lower Cretaceous Coccoliths. I-Gault Clay (Part 1). - Palaeontographical Society Monograph. 126: 1-48.
Gartner, S., (1968): Coccoliths and related calcareous nannofossils from Upper Cretaceous deposits of Texas and Arkansas. - University of Kansas Paleontological Contributions, Articles. 48 (Protista 1): 1-56.
Stover, L. E., (1966): Cretaceous coccoliths and associated nannofossils from France and the Netherlands. - Micropaleontology. 12(2): 133-167.