Fossil Record
Fossil Record
Fossil Record
Articles | Volume 21, issue 1
Articles | Volume 21, issue 1
https://doi.org/10.5194/fr-21-33-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/fr-21-33-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 1
Research article
 | 
16 Jan 2018
Research article |  | 16 Jan 2018

Relationships of cochlear coiling shape and hearing frequencies in cetaceans, and the occurrence of infrasonic hearing in Miocene Mysticeti

Indira S. Ritsche, Julia M. Fahlke, Frank Wieder, André Hilger, Ingo Manke, and Oliver Hampe

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Latest update: 20 Nov 2024
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Short summary
The objective was to investigate inner ears and in particular the morphology of the cochlea of fossil and Recent baleen whales to reconstruct the occurrence of low-frequency hearing. Our results of cochlear shape analysis indicate that very low-frequency hearing appeared in the middle Miocene, and infrasonic hearing had evolved by the late Miocene. Cochlear coiling shape is suitable for estimating hearing limits in whales, closely approximated by cochlear length times number of cochlear turns.
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