Article · Wikipedia archive · Last revised Jun 6, 2026

Periotic bone

The periotic bone is the single bone that surrounds the inner ear of birds and mammals. It is formed from the fusion of the prootic, epiotic, and opisthotic bones, and in Cetacea forms a complex with the tympanic bone.

Last revised
Jun 6, 2026
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≈ 1 min
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The periotic bone is the single bone that surrounds the inner ear of birds1 and mammals. It is formed from the fusion of the prootic, epiotic, and opisthotic bones, and in Cetacea forms a complex with the tympanic bone.2

References

References

  1. Coues, Elliott (1883). "A Hearing of Birds' Ears.-- III". Science. 2 (39): 586–589. ISSN 0036-8075.
  2. Tsur, Itamar; Shaviv, Nir; Bronstein, Israel; Elmakis, David; Knafo, Oshri; Werner, Yehudah L. (December 2019). "Topography of vibration frequency responses on the bony tympano-periotic complex of the pilot whale Globicephala macrorhynchus". Hearing Research. 384 107810. doi:10.1016/j.heares.2019.107810.