Mostrar el registro sencillo del ítem
dc.contributor.author
Gaetano, Leandro Carlos
dc.contributor.author
Abdala, Nestor Fernando
dc.date.available
2018-09-19T17:59:25Z
dc.date.issued
2015-07
dc.identifier.citation
Gaetano, Leandro Carlos; Abdala, Nestor Fernando; The stapes of gomphodont cynodonts: Insights into the middle ear structure of non-mammaliaform cynodonts; Public Library of Science; Plos One; 10; 7; 7-2015; 1-25; e0131174
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/60254
dc.description.abstract
The stapes is known in several non-mammaliaform cynodonts, although it has only been cursorily studied. Here we thoroughly analyze the stapedial anatomy of several basal cynodonts in a phylogenetic framework. Our study shows that the stapedial anatomy is more variable than previously thought. The morphological variation of the stapes led to the recognition of 11 phylogenetic characters that were included in a total evidence data matrix centered in the analysis of gomphodont cynodonts. Stapes morphology does not provide evidence to suggest a direct connection between the stapes and a postquadrate tympanic membrane (if present) and the hypothesis of a dorsal process as the site of attachment of a small ligament or the stapedial muscle is supported. The re-evaluation of the theories concerning the position of the tympanic membrane in non-mammaliaform cynodonts allowed us to conclude that the hypothetical postquadrate tympanic membrane associated with the squamosal sulcus is at best relictual and most likely non-functional (not connected with the stapes). The sound waves were most likely transmitted to the stapes from a postdentary tympanic membrane through the quadrate. Our analysis results in a better understanding of the auditory system in basal cynodonts and its evolution, highlighting the variability of the stapedial anatomy.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Stapes
dc.subject
Middle Ear
dc.subject
Gomphodont
dc.subject
Cynodonts
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The stapes of gomphodont cynodonts: Insights into the middle ear structure of non-mammaliaform cynodonts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-18T13:16:29Z
dc.journal.volume
10
dc.journal.number
7
dc.journal.pagination
1-25; e0131174
dc.journal.pais
Estados Unidos
dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Gaetano, Leandro Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina. University of the Witwatersrand; Sudáfrica
dc.description.fil
Fil: Abdala, Nestor Fernando. Centre of Excellence in Palaeosciences; Sudáfrica. University of the Witwatersrand; Sudáfrica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Plos One
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1371/journal.pone.0131174
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0131174
Archivos asociados