Cyclococcolithus neogammation Bramlette & Wilcoxon, 1967
Strictly circular placolith having a small central opening with a distinct tube cycle. The size ranges of Cyclicargolithus neogammation is between 6.0µm and 10.5µm
Cyclicargolithus neogammation differ from Cyclicargolithus floridanus (Roth & Hay in Hay et al., 1967) Bukry, 1971b by being 6.0-10.5µm whereas the size of the latter is less than 6.0µm.
Bramlette, M. N., Wilcoxon, J. A., 1967. Middle Tertiary calcareous nannoplankton of the Cipero section, Trinidad, W.I. Tulane Studies in Geology and Paleontology 5, 93-131.
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.
Cyclococcolithus neogammation
Bramlette & Wilcoxon, 1967
Oligocene
Cipero Section, Trinidad