Fig. 5
From: Vocal tract anatomy of king penguins: morphological traits of two-voiced sound production
Surface rendering of μCT data of a male king penguin skull and upper vocal tract. a: Skull, tongue, hyoid, larynx and upper trachea seen from laterocaudal, left side. b: Craniocaudal view of the hyoid apparatus and the larynx. Note that both ceratobranchial bones are fractured and both epibranchiale, connected through joints with the ceratobranchiale in the live bird, were dislocated in this specimen. At the left edge of the figure the tip of the beak is missing due to limitations of the physical space in the CT-scanner