Early evolution of the ossicular chain in Cetacea: into the middle ear gears of a semi-aquatic protocetid whale
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i

Early evolution of the ossicular chain in Cetacea: into the middle ear gears of a semi-aquatic protocetid whale

Details:

  • Alternative Title:
    Data from: Early evolution of the ossicular chain in Cetacea: into the middle ear gears of a semi-aquatic protocetid whale
  • Personal Author:
  • Corporate Authors:
  • NOAA Program & Office:
  • Description:
    Modifications of the morphology and acoustic properties of the ossicular chain are among the major changes that accompanied the adaptation of Cetacea to the aquatic environment. Thus, data on the middle ear ossicles of early whales are crucial clues to understand the first steps of the emblematic terrestrial/aquatic transition that occurred in that group. Yet, the delicate nature and very small size of these bones make their preservation in the fossil record extremely rare. Due to the scarcity of available data, major questions remain concerning the sound transmission pathways in early non-fully aquatic whales. Virtual reconstruction of a partially complete ossicular chain of an Eocene protocetid whale documents for the first time the three ossicles of a semi-aquatic archaeocete. Contrary to previous hypotheses, these ossicles present different evolutionary patterns, showing that the ossicular chain does not act as a single morphological module. Functional analyses of the different middle ear units highlight a mosaic pattern of terrestrial and aquatic signatures. This integrative anatomical and functional study brings strong evidence that protocetids were adapted to their dual acoustic environment with efficient hearing in both air and water.
  • Content Notes:
    Supplementary material from "Early evolution of the ossicular chain in Cetacea: into the middle Ear gears of a semi-aquatic protocetid whale" are availabile via Dryad & Figshare.

    Mourlam & Orliac_Ossicles Protocetid_ESM_Table S1 Table S1. Measurements of the middle ear hearing parameters.

    Mourlam & Orliac_Ossicles Protocetid_ESM_Document S1. Content Text S1. Incudomallear complex orientation; Text S2. Chorda tympani hypothetical pathway; Figure S1. Spatial “incudomallear-centred” referential; Figure S2. Bone thickness maps of UM-KPG-M 73; Figure S3. Tympanic membrane area estimation; Figure S4. Stapes - Comparative plate; Figure S5. Incus - Comparative plate; Figure S6. Malleus reconstruction and comparison; Figure S7. Chorda tympani location; Figure S8. Malleus - Comparative plate; Figure S9. Middle ear’s functional profile comparison.

  • DOI:
  • Format:
  • Publisher:
  • Document Type:
  • Media Type:
    application/http
  • Dataset:
    Mourlam, Mickaël; Orliac, Maeva (2019), Data from: Early evolution of the ossicular chain in Cetacea: into the middle ear gears of a semi-aquatic protocetid whale, Dryad, Dataset, https://doi.org/10.5061/dryad.0k3fv2j Accessed via the NOAA Institutional Repository.;Mourlam, Mickaël J.; Orliac, Maeva J. (2019). Supplementary material from "Early evolution of the ossicular chain in Cetacea: into the middle Ear gears of a semi-aquatic protocetid whale". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.4668704.v1 Accessed via the NOAA Institutional Repository.;
  • License:
  • Rights Information:
    CC0 1.0 Universal (CC0 1.0) Public Domain
  • Compliance:
    Library
  • Main Document Checksum:

Publications

More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.27.1