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
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 |_ Pores of vertical intervallar structures

Belongs to the groups