Descriptor : Relationship between rows of carcass pores and intersept (IW)

Descriptor type : categorical

Pore: Simple perforation of any skeletal structure. Pore diameter is greater than thickness of the structure.

Intersept: Part of a wall or intervallum between two adjacent radial vertical structures (septa, taeniae…).

Carcass: Part of wall on intervallum side.

IW: Inner wall.

Stirrup pores

Stirrup: Perforation in front of each vertical intervalar structure.

NB: Transverse section resembles stirrup.

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

1

2

More than 2

No vertical intervallar element

isn't included in the term

Hierarchy

Carcass perforations: inner wall (IW)
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 |_ Relationship between rows of carcass pores and intersept (IW)