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dc.contributor.author
Viglino, Mariana  
dc.contributor.author
Gaetán, Carlos Maximiliano  
dc.contributor.author
Buono, Mónica Romina  
dc.contributor.author
Fordyce, Robert Ewan  
dc.contributor.author
Park, Travis  
dc.date.available
2021-08-27T19:16:24Z  
dc.date.issued
2021-03  
dc.identifier.citation
Viglino, Mariana; Gaetán, Carlos Maximiliano; Buono, Mónica Romina; Fordyce, Robert Ewan; Park, Travis; Hearing from the ocean and into the river: The evolution of the inner ear of Platanistoidea (Cetacea, Odontoceti); Paleontological Society; Paleobiology; 47; 4; 3-2021; 1-21  
dc.identifier.issn
0094-8373  
dc.identifier.uri
http://hdl.handle.net/11336/139143  
dc.description.abstract
The inner ear of the two higher clades of modern cetaceans (Neoceti) is highly adapted for hearing infrasonic (mysticetes) or ultrasonic (odontocetes) frequencies. Within odontocetes, Platanistoidea comprises a single extant riverine representative, Platanista gangetica, and a diversity of mainly extinct marine species from the late Oligocene onward. Recent studies, drawing on features including the disparate tympanoperiotic, have not yet provided a consensus phylogenetic hypothesis for platanistoids. Further, cochlear morphology and evolutionary patterns have never been reported. Here, we describe for the first time the inner ear morphology of late Oligocene-early Miocene extinct marine platanistoids and their evolutionary patterns. We initially hypothesized that extinct marine platanistoids lacked a specialised inner ear like Platanista gangetica and thus, their morphology and inferred hearing abilities were more similar to pelagic odontocetes. Our results reveal there is no "typical" platanistoid cochlear type as the group displays a disparate range of cochlear anatomies, but all are consistent with high-frequency hearing. Stem odontocete Prosqualodon australis and platanistoid Otekaikea huata present a tympanal recess in their cochlea, of yet uncertain function in the hearing mechanism in cetaceans. The more basal morphology of Aondelphis talen indicates it had lower high-frequency hearing than other platanistoids. Finally, Platanista has the most derived cochlear morphology, adding to evidence that it is an outlier within the group and consistent with a >9 Myr long separation from its sister genus Zarhachis. The evolution of a singular sound production morphology within Platanistidae may have facilitated the survival of Platanista to the present day.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Paleontological Society  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
COCHLEAR MORPHOLOGY  
dc.subject
3D GEOMETRIC MORPHOMETRICS  
dc.subject
TOOTHED WHALES  
dc.subject
HIGH-FREQUENCY HEARING  
dc.subject.classification
Paleontología  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Hearing from the ocean and into the river: The evolution of the inner ear of Platanistoidea (Cetacea, Odontoceti)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-07-30T18:06:06Z  
dc.journal.volume
47  
dc.journal.number
4  
dc.journal.pagination
1-21  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Lawrence  
dc.description.fil
Fil: Viglino, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina  
dc.description.fil
Fil: Gaetán, Carlos Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina  
dc.description.fil
Fil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina  
dc.description.fil
Fil: Fordyce, Robert Ewan. University of Otago; Nueva Zelanda  
dc.description.fil
Fil: Park, Travis. Natural History Museum; Reino Unido  
dc.journal.title
Paleobiology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/paleobiology/article/hearing-from-the-ocean-and-into-the-river-the-evolution-of-the-inner-ear-of-platanistoidea-cetacea-odontoceti/444F2805F0F6736D9D8EDC0A8866A9C2  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/pab.2021.11