Descriptor : Shape of carcass canals zone A (IW)

Descriptor type : categorical

NB: Look tube shape not opening shape.

Zone A: Intervallum side.

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.

Carcass: Part of wall on intervallum side.

IW: Inner wall.

Straight

../images/canaux_droits_mi.png

Straight

../images/SYNAPTICULES_AFIACYATHUS2.png

Straight

Waved

../images/canal_ondule_mi2I.png

Waved

../images/canal_ondule_miI.png

Waved

S-shaped

S-shaped: Resembles S in longitudinal section.

../images/canal_s_haut_miI.png

S-shaped

V-shaped

V-shaped: Resembles V in longitudinal section.

../images/orienticyathus_mamontovi1I.png

V-shaped

Inverted V-shaped

Inverted V-shaped: Resembles A in longitudinal section.

../images/canalIW_en_VinvI.png

Inverted V-shaped

Hierarchy

Carcass perforations: inner wall (IW)
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 |_ Shape of carcass canals zone A (IW)

Belongs to the groups