Vertical intervallar structures: Longitudinal and often radial structures inside the intervallum (septa, taeniae...).
Intervallum: Space enclosed between the walls.
Synapticula (plur. synapticulae): Narrow horizontal rod linking two adjacent vertical intervallar structures.
Plate: Porous plate linking adjacent radial-longitudinal partitions (septa, taeniae, etc).
NB: Resembles a flat synapticula.
Pillar: Longitudinal rodlike structure connecting adjacent tabulae.
Tabula (plur. tabulae): Transverse porous partition linking both walls of a two-walled cup.
Bar: Narrow horizontal rod linking the two carcass walls.
Type of links between intervallar structures | |_ Repartition of synapticulae {None , Plates , Pillars , Bars} | |_ Repartition of pillars {None , Synapticulae , Plates , Bars} | |_ Type of plates {None , Synapticulae , Pillars , Bars}