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Coccoliths and silicoflagellates in 50 samples from five coreholes in southern New Jersey are assigned to transoceanic zones for Campanian, Maestri chti an, Eocene and Miocene. Noteworthy zonal guide species in the core samples include Broinsonia parca and Marthasterites furcatus (Zone CC18) in the lower Campanian of the Clayton Well, Nephrolithus frequens (Zone CC26) in the upper Maestrichtian of the Atco Well, Isthmolithus recurvus (Subzone CP 15b) in the upper Eocene of the Ragovin Well, Helicosphaera ampliaperta (Zone CN3) in the lower Miocene of the Clayton Well and Distephanus stauracanthus (JX stauracanthus Subzone) in the middle Miocene of the Acow 2 Well. Many of the samples studied are near series or subseries boundaries and were intended to aid boundary resolution where multiple microfossil zonations are available,

Remarks on calcareous and siliceous nannoplankton biostratigraphy for some Cretaceous and Tertiary core samples from southern New Jersey