Ericsonia insolita Perch-Nielsen, 1971c
Coccolithus insolitus (Perch-Nielsen, 1971) Jiang, Ladner & Wise in Jiang & Wise, 2007b
Coccolithus opdykei Bown & Newsam 2017
Pletolithus opdykei (Bown & Newsam 2017) Cappelli et al., 2019
Large (8.0–12.0 µm) species of Cruciplacolithus having a narrow central area spanned by an axial crossbar.
Bown, P. R. & Newsam, C. 2017. Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research 37(1): 25-60.
Cappelli, C., Bown, P. R., Riu, M. D. & Agnini, C. 2019. Middle Eocene large coccolithaceans: Biostratigraphic implications and paleoclimatic clues. Marine Micropaleontology. 154 [2020]: 1-17.
Jiang, S. & Wise, S. W. 2007b. Taxonomic note: A new Coccolithus species that thrived during the Paleocene/Eocene Thermal Maximum. Journal of Nannoplankton Research 29(2): 88-91
Perch-Nielsen, K., 1971c. Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab 18(3), 1-76.