Fig. 1From: Morphology and histology of the olfactory organ of two African lungfishes, Protopterus amphibius and P. dolloi (Lepidosirenidae, Dipnoi)External morphology of the olfactory organ in two lungfishes, Protopterus amphibius and P. dolloi. Blue bent lines indicate incurrent water flowing. Red broken lines indicate the olfactory chamber. AN, anterior nostril; OC, olfactory chamber; PN, posterior nostril; SC, sensory canal; SL, sensory line. The bars indicate 8 cmBack to article page