Cruciplacolithus furtivus Roth, 1983
Covington, J.M. & Wise, S.W., (1987): Calcareous nannofossil biostratigraphy of a Lower Cretaceous deep-sea fan complex: Deep Sea Drilling Project Leg 93 Site 603, lower continental rise off Cape Hatteras. - Initial Reports of the Deep Sea Drilling Project, 93: 617-660.
Roth, P.H., (1983): Jurassic and Lower Cretaceous calcareous nannofossils in the western North Atlantic (Site 534): biostratigraphy, preservation, and some observations on biogeography and palaeoceanography. - Initial Reports of the Deep Sea Drilling Project, 76: 587-621.