Descriptor : Relationship between carcass canals and intersept (OW/SW)

Descriptor type : categorical

Canal: Pore modified by skeletal structure thikening or by lintels streching. Canal length is greater than perforation diameter.

Lintel: Skeletal structure separating and bounding adjacent pores.

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

OW: Outer wall.

SW: Single wall.

Carcass: Part of wall on intervallum side.


Stirrup canals

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…).

../images/CANAUX_EN_ETRIER.png

1 canal at septa level

../images/CANAUX_EN_ETRIER2.png

1 canal at septa level

../images/CANAUX_EN_ETRIER3.png

1 canal at septa level

Several rows of canals per intersept

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

Intervallum: Space enclosed between the walls.

../images/CANAUX_EN_S.png

Several rows of canals per intersept

No intervallar vertical elements


Hierarchy

Carcass perforations: outer wall or single wall (OW/SW)
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 |_ Relationship between carcass canals and intersept (OW/SW)

Belongs to the groups