Figure 24 in Refining molluscan characters: morphology, character coding and a phylogeny of the Caenogastropoda

Figure 24. Circum-oesophageal nerve ring morphology. (A) Neocyclotus dysoni ambiguum. Scale bar = 0.5 mm. (B) Lampanella minima. Scale bar = 0.5 mm. (C) Crepidula plana. Scale bar = 0.5 mm. (D) Cypraea robertsi. Upper diagram depicts cerebral, pleural, supra-esophageal, and sub-oesophageal ganglia; lower diagram depicts pedal ganglia and pedal cords. Scale bar = 1 mm. (E) Nitidiscala tinctum. Scale bar = 0.25 mm. (F) Prunum apicinum. Scale bar = 0.5 mm. (G) Ilyanassa obsoletus. Scale bar = 0.5 mm. Abbreviations: bg, buccal ganglion; ceg, cerebral ganglion; d, dialyneury; e, oesophagus; pc, pedal cord; pdg, pedal ganglion; plg, pleural ganglion; ppg, propodial ganglion; sb, sub-oesophageal ganglion; sc, statocone; sp, supra-oesophageal ganglion; z, zygoneury.