The Hyoid Apparatus of Humboldt Penguin (<i>Spheniscus humboldti</i>)

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  • SHINDO Junji
    Niigata City Aquarium:Department of Anatomy School of Dentistry at Niigata, The Nippon Dental University
  • KOBAYASHI Kan
    Department of Anatomy School of Dentistry at Niigata, The Nippon Dental University

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  • フンボルトペンギン(<i>Spheniscus humboldti</i>)の舌骨装置について

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The hyoid apparatus of Humboldt penguin was observed. The paraglossum consisted of cartilage, and it was buried in the tongue. The paraglossum was similar to the arrow shaped tongue. The basihyale was short and fused with the urohyale. The cornu had small paired caudal small processes of the paraglossum. The cornu branchiate consisted of the ceratobranchiale and the epibranchiale and length of the ceratobranchiale and the epibranchiale were in the ratio of approximately 3 to 1. The hyoid apparatus of Humboldt penguin has a unique character, the paraglossum completely consisted of cartilage, and the basihyale was fused with the urohyale.

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