Braarudosphaera pseudobatilliformis Alves et al., 2017
In this pentalith, one segment elongates asymmetrically, resembling a spine, while the remaining segments are of similar size, forming a circular or slightly angular outline.
Alves, C. F., Lima, F. H., de O. & Shimabukoro, S. 2017. New Aptian calcareous nannofossil species from Brazil. Journal of Nannoplankton Research. 37(1): 15-24.
Braarudosphaera pseudobatilliformis
Alves et al., 2017
Aptian
Sergipe-Alagoas Basin, Brazil.