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dc.contributor.author
Amador, Lucila Inés
dc.contributor.author
Simmons, Nancy B.
dc.contributor.author
Giannini, Norberto Pedro
dc.date.available
2021-11-01T13:17:13Z
dc.date.issued
2019-03
dc.identifier.citation
Amador, Lucila Inés; Simmons, Nancy B.; Giannini, Norberto Pedro; Aerodynamic reconstruction of the primitive fossil bat Onychonycteris finneyi (Mammalia: Chiroptera); The Royal Society; Biology Letters; 15; 3; 3-2019; 1-5
dc.identifier.issn
1744-9561
dc.identifier.uri
http://hdl.handle.net/11336/145570
dc.description.abstract
Bats are the only mammals capable of powered flight. One of the oldest bats known from a complete skeleton is Onychonycteris finneyi from the Early Eocene (Green River Formation, Wyoming, 52.5 Ma). Estimated to weigh approximately 40 g, Onychonycteris exhibits the most primitive combination of characters thus far known for bats. Here, we reconstructed the aerofoil of the two known specimens, calculated basic aerodynamic variables and compared them with those of extant bats and gliding mammals. Onychonycteris appears in the edges of the morphospace for bats, underscoring the primitive conformation of its flight apparatus. Low aerodynamic efficiency is inferred for this extinct species as compared to any extant bat. When we estimated aerofoil variables in a model of Onychonycteris excluding the handwing, it closely approached the morphospace of extant gliding mammals. Addition of a handwing to the model lacking this structure results in a 2.3-fold increase in aspect ratio and a 28% decrease in wing loading, thus greatly enhancing aerodynamics. In the context of these models, the rapid evolution of the chiropteran handwing via genetically mediated developmental changes appears to have been a key transformation in the hypothesized transition from gliding to flapping in early bats.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
The Royal Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ASPECT RATIO
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EVOLUTION
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FLIGHT
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GLIDING
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HANDWING
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WING LOADING
dc.subject.classification
Biología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Aerodynamic reconstruction of the primitive fossil bat Onychonycteris finneyi (Mammalia: Chiroptera)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-12-16T16:10:47Z
dc.journal.volume
15
dc.journal.number
3
dc.journal.pagination
1-5
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Amador, Lucila Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
dc.description.fil
Fil: Simmons, Nancy B.. American Museum of Natural History; Estados Unidos
dc.description.fil
Fil: Giannini, Norberto Pedro. American Museum of Natural History; Estados Unidos
dc.journal.title
Biology Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2018.0857
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1098/rsbl.2018.0857
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