Definição: A state of the cingulum wherein the end of the cingulum is higher than the beginning. Facing the ventral side of the cell, the cingulum on your right-hand side is lower than the cingulum on your left-hand side.
Definição: A three dimensional shape that approximates a trapezoid. (see Table 1, Olenina, I., Hajdu, S., Edler, L., Andersson, A., Wasmund, N., Busch, S., Göbel, J., Gromisz, S., Huseby, S., Huttunen, M., Jaanus, A., Kokkonen, P., Ledaine, I. and Niemkiewicz, E. 2006. Biovolumes and size-classes of phytoplankton in the Baltic Sea. HELCOM Balt.Sea Environ. Proc. No. 106, 144pp.)
