Douglas, R. G.; Roth, P. H.; Moore, T. C., Jr. (1973): Biostratigraphic synthesis; hiatuses and unconformities. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 17 (Honolulu, Hawaii to Honolulu, Hawaii; April-May 1971), 905-909, georefid:1976-017617