Descriptor : Carcass perforations: inner wall (IW)
Descriptor type : categorical
Carcass: Part of wall on intervallum side.
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 perforations: inner wall (IW)
- Pores
-
Pore: Simple perforation of any skeletal structure. Pore diameter is greater than thickness of the structure.
Pores
Pores
- Canals
-
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. - Vertical tubes
-
Vertical tube: One canal-like opening, longitudinally continuous along entire cup, bounded by longitudinal plates and lacking transverse partitions.
Upright tubes
Vertical tubes
- None (perforation and/or inner wall)
-
None (perforation and/or inner wall)
Hierarchy
Carcass perforations: inner wall (IW) | |_ Type of carcass pores (IW) {Canals , Vertical tubes , None (perforation and/or inner wall)} | |_ Relationship between rows of carcass pores and intersept (IW) {Canals , Vertical tubes , None (perforation and/or inner wall)} | |_ Relationship between rows of carcass pores and tabulae (IW) {Canals , Vertical tubes , None (perforation and/or inner wall)} | |_ Constitution of carcass canal system (IW) {Pores , Vertical tubes , None (perforation and/or inner wall)} | |_ Shape of carcass canals zone A (IW) {Pores , Vertical tubes , None (perforation and/or inner wall)} | |_ Porosity of carcass canals zone A (IW) {Pores , Vertical tubes , None (perforation and/or inner wall)} | |_ Relationship between carcass canals zone A and intersept (IW) {Pores , Vertical tubes , None (perforation and/or inner wall)} | |_ Direction of carcass canals zone A (IW) {Pores , Vertical tubes , None (perforation and/or inner wall)} | |_ Building of carcass perforations (IW) {None (perforation and/or inner wall)}