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dc.contributor.author
Soto Acuña, Sergio
dc.contributor.author
Vargas, Alexander O.
dc.contributor.author
Kaluza, Jonatan Ezequiel
dc.contributor.author
Leppe, Marcelo A.
dc.contributor.author
Botelho, Joao F.
dc.contributor.author
Palma Liberona, José
dc.contributor.author
Gutstein, Carolina Simon
dc.contributor.author
Fernández, Roy A.
dc.contributor.author
Ortiz, Héctor
dc.contributor.author
Milla, Verónica
dc.contributor.author
Aravena, Bárbara
dc.contributor.author
Manríquez, Leslie M. E.
dc.contributor.author
Alarcón Muñoz, Jhonatan
dc.contributor.author
Pino, Juan Pablo
dc.contributor.author
Trevisan, Cristine
dc.contributor.author
Mansilla, Héctor Sebastian
dc.contributor.author
Hinojosa, Luis Felipe
dc.contributor.author
Muñoz Walther, Vicente
dc.contributor.author
Rubilar Rogers, David
dc.date.available
2022-04-13T16:18:16Z
dc.date.issued
2021-12
dc.identifier.citation
Soto Acuña, Sergio; Vargas, Alexander O.; Kaluza, Jonatan Ezequiel; Leppe, Marcelo A.; Botelho, Joao F.; et al.; Bizarre tail weaponry in a transitional ankylosaur from subantarctic Chile; Nature Publishing Group; Nature; 600; 7888; 12-2021; 259-263
dc.identifier.issn
0028-0836
dc.identifier.uri
http://hdl.handle.net/11336/155205
dc.description.abstract
Armoured dinosaurs are well known for their evolution of specialized tail weapons— paired tail spikes in stegosaurs and heavy tail clubs in advanced ankylosaurs1 . Armoured dinosaurs from southern Gondwana are rare and enigmatic, but probably include the earliest branches of Ankylosauria2–4 . Here we describe a mostly complete, semi-articulated skeleton of a small (approximately 2 m) armoured dinosaur from the late Cretaceous period of Magallanes in southernmost Chile, a region that is biogeographically related to West Antarctica5 . Stegouros elengassen gen. et sp. nov. evolved a large tail weapon unlike any dinosaur: a fat, frond-like structure formed by seven pairs of laterally projecting osteoderms encasing the distal half of the tail. Stegouros shows ankylosaurian cranial characters, but a largely ancestral postcranial skeleton, with some stegosaur-like characters. Phylogenetic analyses placed Stegouros in Ankylosauria; specifcally, it is related to Kunbarrasaurus from Australia6 and Antarctopelta from Antarctica7 , forming a clade of Gondwanan ankylosaurs that split earliest from all other ankylosaurs. The large osteoderms and specialized tail vertebrae in Antarctopelta suggest that it had a tail weapon similar to Stegouros. We propose a new clade, the Parankylosauria, to include the frst ancestor of Stegouros— but not Ankylosaurus—and all descendants of that ancestor.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Publishing Group
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
PALEONTOLOGIA
dc.subject
ANKILOSAURIO
dc.subject
CRETACICO
dc.subject
GONDWANA
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Bizarre tail weaponry in a transitional ankylosaur from subantarctic Chile
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-04-07T22:12:18Z
dc.identifier.eissn
1476-4687
dc.journal.volume
600
dc.journal.number
7888
dc.journal.pagination
259-263
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Soto Acuña, Sergio. Universidad de Chile; Chile
dc.description.fil
Fil: Vargas, Alexander O.. Universidad de Chile; Chile
dc.description.fil
Fil: Kaluza, Jonatan Ezequiel. Universidad de Chile; Chile. Universidad Maimónides; Argentina. Fundación de Historia Natural Félix de Azara; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Leppe, Marcelo A.. Universidad de Chile; Chile. Instituto Nacional Antártico Chileno; Chile
dc.description.fil
Fil: Botelho, Joao F.. Universidad de Chile; Chile. Pontificia Universidad Católica de Chile; Chile
dc.description.fil
Fil: Palma Liberona, José. Universidad de Chile; Chile. Pontificia Universidad Católica de Chile; Chile
dc.description.fil
Fil: Gutstein, Carolina Simon. Universidad de Chile; Chile
dc.description.fil
Fil: Fernández, Roy A.. Universidad de Chile; Chile. Universidad de Concepción; Chile
dc.description.fil
Fil: Ortiz, Héctor. Universidad de Chile; Chile. Universidad de Magallanes; Chile
dc.description.fil
Fil: Milla, Verónica. Universidad de Chile; Chile. Universidad de Concepción; Chile
dc.description.fil
Fil: Aravena, Bárbara. Universidad de Chile; Chile
dc.description.fil
Fil: Manríquez, Leslie M. E.. Universidad de Chile; Chile. Universidad de Vale do Rio dos Sinos; Brasil
dc.description.fil
Fil: Alarcón Muñoz, Jhonatan. Universidad de Chile; Chile
dc.description.fil
Fil: Pino, Juan Pablo. Universidad de Chile; Chile
dc.description.fil
Fil: Trevisan, Cristine. Universidad de Chile; Chile. Instituto Nacional Antártico Chileno; Chile
dc.description.fil
Fil: Mansilla, Héctor Sebastian. Universidad de Chile; Chile. Instituto Nacional Antártico Chileno; Chile
dc.description.fil
Fil: Hinojosa, Luis Felipe. Universidad de Chile; Chile
dc.description.fil
Fil: Muñoz Walther, Vicente. Universidad de Chile; Chile
dc.description.fil
Fil: Rubilar Rogers, David. Museo Nacional de Historia Natural Chile; Chile. Universidad de Chile; Chile
dc.journal.title
Nature
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41586-021-04147-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1038/s41586-021-04147-1
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