Descriptor : Relationship between rows of carcass pores and tabulae (IW)
Descriptor type : categorical
Pore: Simple perforation of any skeletal structure. Pore diameter is greater than thickness of the structure.
Tabula (plur. tabulae): Transverse porous partition linking both walls of a two-walled cup.
Carcass: Part of wall on intervallum side.
IW: Inner wall.
- Stirrup pores
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Stirrup: Perforation in front of each tabula.
NB: Transverse section resembles stirrup.
Tabula (plur. tabulae): Transverse porous partition linking both walls of a two-walled cup.
Stirrup pores
- One row of pores between two successive tabulae
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One row of pores between two successive tabulae
- Several rows of pores between two successive tabulae
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Several rows of pores between two successive tabulae
- No tabula
-
Tabulae missing
Hierarchy
Carcass perforations: inner wall (IW) | |_ Relationship between rows of carcass pores and tabulae (IW)