A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina

Autores
Makovicky, Peter J.; Apesteguía, Sebastián; Gianechini, Federico Abel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new coelurosaurian theropod, Alnashetri cerropoliciensis, is reported here based on articulated hind limbs of a single individual discovered at the locality of La Buitrera (Candeleros Formation, Cenomanian–Turonian), Río Negro Province, Argentina. The new taxon differs from other coelurosaurs in the possession of a low ridge that separates the rostral tibial surface from the outer face of the lateral malleolus, and which extends proximally beyond the tip of the ascending process of the astragalus, and in the possession of ventral notches on the hemicondyles of the distal articulations on pedal phalanges III-1 and III-2. Alnashetri is easily distinguished from the dromaeosaurid Buitreraptor, the only other known small theropod from La Buitrera. Phylogenetic analysis supports alvarezsauroid affinities. The evidence supporting this relationship comes from the detailed anatomy of the ankle, however, and this concentration of character support within a single anatomical region may bias our results. If our proposed phylogenetic placement is accurate, Alnashetri antedates all other Argentinian alvarezsaurids and indicates that alvarezsaurids were present in the Neuquén Basin throughout the entire Late Cretaceous.
Fil: Makovicky, Peter J.. Field Museum of National History; Estados Unidos
Fil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina
Fil: Gianechini, Federico Abel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina
Materia
CELUROSAURIO
TEROPODO
PATAGONIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/197824
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, ArgentinaMakovicky, Peter J.Apesteguía, SebastiánGianechini, Federico AbelCELUROSAURIOTEROPODOPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A new coelurosaurian theropod, Alnashetri cerropoliciensis, is reported here based on articulated hind limbs of a single individual discovered at the locality of La Buitrera (Candeleros Formation, Cenomanian–Turonian), Río Negro Province, Argentina. The new taxon differs from other coelurosaurs in the possession of a low ridge that separates the rostral tibial surface from the outer face of the lateral malleolus, and which extends proximally beyond the tip of the ascending process of the astragalus, and in the possession of ventral notches on the hemicondyles of the distal articulations on pedal phalanges III-1 and III-2. Alnashetri is easily distinguished from the dromaeosaurid Buitreraptor, the only other known small theropod from La Buitrera. Phylogenetic analysis supports alvarezsauroid affinities. The evidence supporting this relationship comes from the detailed anatomy of the ankle, however, and this concentration of character support within a single anatomical region may bias our results. If our proposed phylogenetic placement is accurate, Alnashetri antedates all other Argentinian alvarezsaurids and indicates that alvarezsaurids were present in the Neuquén Basin throughout the entire Late Cretaceous.Fil: Makovicky, Peter J.. Field Museum of National History; Estados UnidosFil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; ArgentinaFil: Gianechini, Federico Abel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; ArgentinaBioOne2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/197824Makovicky, Peter J.; Apesteguía, Sebastián; Gianechini, Federico Abel; A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina; BioOne; Fieldiana Life and Earth Sciences; 5; 10-2012; 90-982158-5520CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/Fieldiana-Life-and-Earth-Sciences/volume-35/issue-5/2158-5520-5.1.90/A-New-Coelurosaurian-Theropod-from-the-La-Buitrera-Fossil-Locality/10.3158/2158-5520-5.1.90.shortinfo:eu-repo/semantics/altIdentifier/doi/10.3158/2158-5520-5.1.90info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:16:47Zoai:ri.conicet.gov.ar:11336/197824instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:16:47.306CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
title A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
spellingShingle A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
Makovicky, Peter J.
CELUROSAURIO
TEROPODO
PATAGONIA
title_short A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
title_full A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
title_fullStr A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
title_full_unstemmed A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
title_sort A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina
dc.creator.none.fl_str_mv Makovicky, Peter J.
Apesteguía, Sebastián
Gianechini, Federico Abel
author Makovicky, Peter J.
author_facet Makovicky, Peter J.
Apesteguía, Sebastián
Gianechini, Federico Abel
author_role author
author2 Apesteguía, Sebastián
Gianechini, Federico Abel
author2_role author
author
dc.subject.none.fl_str_mv CELUROSAURIO
TEROPODO
PATAGONIA
topic CELUROSAURIO
TEROPODO
PATAGONIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new coelurosaurian theropod, Alnashetri cerropoliciensis, is reported here based on articulated hind limbs of a single individual discovered at the locality of La Buitrera (Candeleros Formation, Cenomanian–Turonian), Río Negro Province, Argentina. The new taxon differs from other coelurosaurs in the possession of a low ridge that separates the rostral tibial surface from the outer face of the lateral malleolus, and which extends proximally beyond the tip of the ascending process of the astragalus, and in the possession of ventral notches on the hemicondyles of the distal articulations on pedal phalanges III-1 and III-2. Alnashetri is easily distinguished from the dromaeosaurid Buitreraptor, the only other known small theropod from La Buitrera. Phylogenetic analysis supports alvarezsauroid affinities. The evidence supporting this relationship comes from the detailed anatomy of the ankle, however, and this concentration of character support within a single anatomical region may bias our results. If our proposed phylogenetic placement is accurate, Alnashetri antedates all other Argentinian alvarezsaurids and indicates that alvarezsaurids were present in the Neuquén Basin throughout the entire Late Cretaceous.
Fil: Makovicky, Peter J.. Field Museum of National History; Estados Unidos
Fil: Apesteguía, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina
Fil: Gianechini, Federico Abel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina
description A new coelurosaurian theropod, Alnashetri cerropoliciensis, is reported here based on articulated hind limbs of a single individual discovered at the locality of La Buitrera (Candeleros Formation, Cenomanian–Turonian), Río Negro Province, Argentina. The new taxon differs from other coelurosaurs in the possession of a low ridge that separates the rostral tibial surface from the outer face of the lateral malleolus, and which extends proximally beyond the tip of the ascending process of the astragalus, and in the possession of ventral notches on the hemicondyles of the distal articulations on pedal phalanges III-1 and III-2. Alnashetri is easily distinguished from the dromaeosaurid Buitreraptor, the only other known small theropod from La Buitrera. Phylogenetic analysis supports alvarezsauroid affinities. The evidence supporting this relationship comes from the detailed anatomy of the ankle, however, and this concentration of character support within a single anatomical region may bias our results. If our proposed phylogenetic placement is accurate, Alnashetri antedates all other Argentinian alvarezsaurids and indicates that alvarezsaurids were present in the Neuquén Basin throughout the entire Late Cretaceous.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/197824
Makovicky, Peter J.; Apesteguía, Sebastián; Gianechini, Federico Abel; A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina; BioOne; Fieldiana Life and Earth Sciences; 5; 10-2012; 90-98
2158-5520
CONICET Digital
CONICET
url http://hdl.handle.net/11336/197824
identifier_str_mv Makovicky, Peter J.; Apesteguía, Sebastián; Gianechini, Federico Abel; A New Coelurosaurian Theropod from the La Buitrera Fossil Locality of Río Negro, Argentina; BioOne; Fieldiana Life and Earth Sciences; 5; 10-2012; 90-98
2158-5520
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/Fieldiana-Life-and-Earth-Sciences/volume-35/issue-5/2158-5520-5.1.90/A-New-Coelurosaurian-Theropod-from-the-La-Buitrera-Fossil-Locality/10.3158/2158-5520-5.1.90.short
info:eu-repo/semantics/altIdentifier/doi/10.3158/2158-5520-5.1.90
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv BioOne
publisher.none.fl_str_mv BioOne
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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