Descriptor : Relationship between rows of carcass pores and intersept (OW/SW)

Descriptor type : categorical

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

Carcass: Part of wall on intervallum side.

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

OW: Outer wall.

SW: Single wall.

1

2

more than 2

No vertical intervallar element

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

Hierarchy

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

Belongs to the groups