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Diagram of the external acoustic meatus in the bowhead whale (A) and dissection photograph (B: NSB‐DWM 2016B8, right side, image reversed for comparability to top image). The scalpel lies along the long axis of the external auditory meatus (EAM). Structures shown in diagram are not present in a single plane or visible in a single view. Proportions of the basicranium change significantly over ontogeny. Drawing by Jacqueline Dillard.
