Ericsonia media Bown, 2016
Circular to elliptical placoliths exhibit two shields of similar size and a distally protruding single tube cycle. The central area may be open or closed. The inclined extinction lines are laevogyre distally and dextrogyre proximally. The tube cycle and proximal shield exhibit inclined extinction lines and length-fast (-) elongations.
Bown, P. R. 2016. Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32.
Varol, O. 2023. New paleocene calcareous nannofossils: Carlamuelleria, Davidbukrya, Mauriceblackia, Noelia and Senelia. Marine Micropaleontology. 180: 1-41.