Fig. 2From: Siphonal zone structure in the cuttlebone of Sepia officinalis Sepia officinalis. Beach-collected cuttlebone; Vale do Lobo, southern Portugal. Ventral side of cuttlebone showing connecting stripes and contacting ridges of the siphonal zone. Scale bar is 1 mm. cr contacting ridge, cs connecting stripe, pi pillar structureBack to article page