Bramlette M N,Martini E.The great change in calcareous nannoplanton fossil between the Maastrichtian and Danian [J].Micropaleontology,1964,10 (3):291~322 ,pls.1~7.
Perch N.Mesozoic calcareous nannofossils[A].In: Bollii et al,(Eds).Plankton Stratigraphy[C].1985.330~428.
[12]
Crux J A.Upper Cretaceous (Cenomanian to Campanian) calcareous nannofossils[A].In: Lord A R (Ed).A stratigraphical index of calcareous nannofossils[C].1982.81~136.
[13]
Heck van.Nannoplankton contents of the Type-Maastrichtian,INA[J].Newsletter,1979,1 ( 1 ): N5~N6.
[14]
Verbeek J W.Upper Cretaceous nannoplanton zonation in a composite section near EL Kef[J].Tunisia.Proc.Kon.Ned.Akad.Wetensch,1976,B.79:129~148.
[15]
Martini E.Cretaceous to recent calcareous nannoplanton from the central Pacific Ocean(DSDP Leg 33)[J].Initial Rep.Deep Sea drill.,1976,Proj.33:383~423.