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Schematic reconstruction of the nasal muscles in the skull of Eubalaena australis in lateral view: (A) four of the nasal muscles described; (B,C) detail of each nasal muscles from the most superficial (m. dilator naris superficialis and m. dilator naris profundus); (D) to the most profundus (m. constrictor naris and m. retractor alae nasi).
