Coccolithus floridanus Roth & Hay in Hay et al., 1967
Circular reticulofenestrid with a narrow central opening.
Cyclicargolithus differs from Reticulofenestra by being circular and having a narrow central opening. The species of this genus were identified based on their sizes.
Bukry, D., 1971b. Cenozoic calcareous nannofossils from the Pacific Ocean. - San Diego Society of Natural History Transactions 16, 303-327.
Hay, W. W., Mohler, H. P., Roth, P. H., Schmidt, R. R., Boudreaux, J. E., 1967. Calcareous nannoplankton zonation of the Cenozoic of the Gulf Coast and Caribbean-Antillean area, and transoceanic correlation. - Transactions of the Gulf-Coast Association of Geological Societies 17, 428-480.