Ceratolithina cf. cruxii Perch-Nielsen, 1988
Variation of Ceratolithina cruxii is constructed from a laminated, rod‑like crystalline block that bears only a sail‑like anterior‑lateral blade, which is truncated at the anterior end.
Perch-Nielsen, K., 1988. New Lower Cretaceous calcareous nannofossil species from England. INA Newsletter. 10(1), 30-37.