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(a) Lophiomys imhausi warning display; note lateral hair tract at visual centre of signal design. (b) Outline of skinned specimen in same position with lateral-line tract outlined; note how long hair transforms visual appearance. (c) Skeleton; note robust and elongated vertebral column, and possible role of scapulae as protective shields above vital centres. For a view of the animal's routine state, see the figure of electronic supplementary material, video S1.
