Descriptor : Structure of inner carcass wall (IW)

Descriptor type : categorical

Inner wall: Internal part of the skeleton, separating central cavity and skeletal structures, composed by a porous carcass, simple or coated by an additional sheath.

Carcass: part of wall on intervallum side.


Carcass wall well defined

Carcass wall not well defined

Carcass wall not well defined: syn. Rudimentary perforate wall.

isn't included in the term


Hierarchy

Number of walls
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 |_ Structure of inner carcass wall (IW)