Descriptor : Pores of vertical intervallar structures

Descriptor type : categorical

Vertical intervallar structures: Longitudinal and often radial structures inside the intervallum (septa, taeniae...).

Intervallum: Space enclosed between the walls.


Aporous

Aporous: No pore.

../images/pseudoseptes_sans_pore.png

Aporous

../images/compositocyathus_muchattensis1.png

Aporous

Circular pores

Tetragonal pores


Hierarchy

Vertical intervallar structures
 |
 |_ Pores of vertical intervallar structures

Belongs to the groups