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dc.contributor.author
Ezcurra, Martin Daniel
dc.date.available
2018-05-03T18:54:57Z
dc.date.issued
2016-03
dc.identifier.citation
Ezcurra, Martin Daniel; Can social and sexual selection explain the bizarre snout of proterosuchid archosauriforms?; Taylor & Francis; Historical Biology; 29; 3; 3-2016; 348-358
dc.identifier.issn
0891-2963
dc.identifier.uri
http://hdl.handle.net/11336/44019
dc.description.abstract
Proterosuchids are a clade of quadrupedal, carnivorous Permo-Triassic diapsids crucial to understand the successful evolutionary radiation of archosaurs during the Mesozoic. The importance and good fossil record of proterosuchids nourished a renewed interest in recent years, but no function has been proposed for their bizarre snouts. An oversized and downturned premaxilla with up to nine teeth with continuous replacement is present in all proterosuchid species and seems to have represented a physiologically costly phenotype that increased towards adulthood. A non-functional or a species recognition hypothesis are not supported as evolutionary mechanisms that drove this phenotype because features expected for these explanations tend to have a very low or zero physiological cost. There is no evidence favouring –but neither rejecting− that this morphology can be explained by non-sexual and non-social natural selection alone. Mutual social and/or sexual selection is favoured here as the most unambiguously supported explanation for the function and origin of the bizarre snout of proterosuchids based on several lines of evidence, including costliness, positive allometry, positive changes in growth rates and modern analogues. Social and/or sexual selection may have been important evolutionary mechanism in the dawn of the lineage that gave rise to crocodiles and dinosaurs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Archosauromorpha
dc.subject
Proterosuchidae
dc.subject
Proterosuchus
dc.subject
Triassic
dc.subject
Mass Extinction
dc.subject
Ontogeny
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Can social and sexual selection explain the bizarre snout of proterosuchid archosauriforms?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-27T18:51:37Z
dc.identifier.eissn
1029-2381
dc.journal.volume
29
dc.journal.number
3
dc.journal.pagination
348-358
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. University of Birmingham; Reino Unido
dc.journal.title
Historical Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/08912963.2016.1161033
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/08912963.2016.1161033
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