Descripteur : Presence of stipules (OW/SW)

Type du descripteur : categorical

Stipule: Leaflike appendage arising from canal-bract junction in a wall of inverted-V or V-shaped appearance.

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

Bract: Plate stems from lintels which incompletely covering a single pore.

Lintel: Skeletal structure separating and bounding adjacent pores/canals.


Presence of stipules (OW/SW)



Present on outer carcass wall


Present on outer carcass wall


Fait partie des groupes