Carcass: Part of wall on intervallum side.
OW: Outer wall.
SW: Single wall.
Simple: Circular perforation.
Slitlike: Elongate elliptical shaped.
Some pores are polygonal, others are simple.
Simple: Circular perforation.
Polygonal: Often = quadrate.
Similar: Cambroid type.
Polygonal: Often = quadrate.
Similar: anthoid type.
Reticulate: Polygonal pores, the diameter of which is greater than lintel width.
syn. Netlike.
Lintel: Skeletal structure separating and bounding adjacent pores.
Irregular: No geometrical pattern.
syn. Basic, rudimentary.
Type of carcass perforations: outer wall or single wall (OW/SW) | |_ Shape of carcass perforations openings (OW/SW)