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dc.contributor.author
Fernández, Mariela
dc.contributor.author
Garcia, Rodolfo Andres
dc.contributor.author
Fiorelli, Lucas Ernesto
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Scolaro, Jose Alejandro
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Salvador, Rodrigo B.
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Cotaro, Carlos N.
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Kaiser, Gary W.
dc.contributor.author
Dyke, Gareth J.
dc.date.available
2016-10-26T21:19:24Z
dc.date.issued
2013-01
dc.identifier.citation
Fernández, Mariela; Garcia, Rodolfo Andres; Fiorelli, Lucas Ernesto; Scolaro, Jose Alejandro; Salvador, Rodrigo B.; et al.; A large accumulation of avian eggs from the Late Cretaceous of Patagonia (Argentina) reveals a novel nesting strategy in Mesozoic birds; Public Library Of Science; Plos One; 8; 4; 1-2013; 1-22
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/7806
dc.description.abstract
We report the first evidence for a nesting colony of Mesozoic birds on Gondwana: a fossil accumulation in Late Cretaceous rocks mapped and collected from within the campus of the National University of Comahue, Neuquén City, Patagonia (Argentina). Here, Cretaceous ornithothoracine birds, almost certainly Enanthiornithes, nested in an arid, shallow basinal environment among sand dunes close to an ephemeral water-course. We mapped and collected 65 complete, near-complete, and broken eggs across an area of more than 55 m2. These eggs were laid either singly, or occasionally in pairs, onto a sandy substrate. All eggs were found apparently in, or close to, their original nest site; they all occur within the same bedding plane and may represent the product of a single nesting season or a short series of nesting attempts. Although there is no evidence for nesting structures, all but one of the Comahue eggs were half-buried upright in the sand with their pointed end downwards, a position that would have exposed the pole containing the air cell and precluded egg turning. This egg position is not seen in living birds, with the exception of the basal galliform megapodes who place their eggs within mounds of vegetation or burrows. This accumulation reveals a novel nesting behaviour in Mesozoic Aves that was perhaps shared with the non-avian and phylogenetically more basal troodontid theropods.
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/2.5/ar/
dc.subject
Nesting Colony
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Ornithothoracines
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Enantiornithes
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Late Cretaceous
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Patagonia
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Argentina
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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
A large accumulation of avian eggs from the Late Cretaceous of Patagonia (Argentina) reveals a novel nesting strategy in Mesozoic birds
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-04-28T14:52:55Z
dc.journal.volume
8
dc.journal.number
4
dc.journal.pagination
1-22
dc.journal.pais
Estados Unidos
dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Fernández, Mariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina
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Fil: Garcia, Rodolfo Andres. Universidad Nacional de Rio Negro. Sede Alto Valle. Instituto de Investigaciones En Paleobiologia y Geologia; Argentina
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Fil: Fiorelli, Lucas Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Cientificas y Transferencia Tecnológica de Anillaco; Argentina
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Fil: Scolaro, Jose Alejandro. Universidad Nacional de la Patagonia "san Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
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Fil: Salvador, Rodrigo B.. Universidade de Sao Paulo. Instituto Quã­mica de Sao Carlos; Brasil
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Fil: Cotaro, Carlos N.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
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Fil: Kaiser, Gary W.. Royal British Columbia Museum; Canadá
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Fil: Dyke, Gareth J.. University Of Southampton; Reino Unido
dc.journal.title
Plos One
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0061030
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1371/journal.pone.0061030


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