Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)

Autores
Lecuona, Agustina; Desojo, Julia Brenda
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Gracilisuchus stipanicicorum Romer, 1972, from the Middle-Late Triassic of the Ischigualasto-Villa Unión Basin of Argentina, is an extinct pseudosuchian archosaur on the stem toCrocodylomorpha. The pelvic girdle and hind limb anatomy of a referred specimen of Gracilisuchusstipanicicorum is described and compared with that from a broad range of archosauriform taxa,including basal members such as crurotarsans and basal ornithodirans. The description of thisspecimen reveals new information on the anatomy of the pelvic girdle and hind limb of Gracilisuchus,through a detailed examination of some anatomical regions barely or not previously described, aswell as reinterpretations of previous features. The phylogenetic affinities of Gracilisuchus within theArchosauria remain to be tested, but Gracilisuchus shares two putative synapomorphies with somenon-crocodyliform crocodylomorphs, providing tentative support for the monophyly of Sphenosuchia(e.g., Sereno & Wild 1992; Wu & Chatterjee 1993) and the close relationship of Gracilisuchusto that clade. These characteristics are: (i) the morphology and poor development of the femoralfourth trochanter, closely resembling the condition of Pseudhesperosuchus and Trialestes; and (ii) apoor anterior development of the femoral head, shared with Pseudhesperosuchus. On the other handthere are characters that reject the inclusion of Gracilisuchus within Crocodylomorpha (Nesbitt2011), such as the absence of an imperforated acetabulum, and that rather suggests a sister-taxonposition to Crocodylomorpha.
Fil: Lecuona, Agustina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Desojo, Julia Brenda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Materia
Appendicular Anatomy
Argentina
ChaÑAres Formation
Pelvic Girdle
Pseudosuchia
Triassic
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:11336/68133
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/68133
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)Lecuona, AgustinaDesojo, Julia BrendaAppendicular AnatomyArgentinaChaÑAres FormationPelvic GirdlePseudosuchiaTriassichttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Gracilisuchus stipanicicorum Romer, 1972, from the Middle-Late Triassic of the Ischigualasto-Villa Unión Basin of Argentina, is an extinct pseudosuchian archosaur on the stem toCrocodylomorpha. The pelvic girdle and hind limb anatomy of a referred specimen of Gracilisuchusstipanicicorum is described and compared with that from a broad range of archosauriform taxa,including basal members such as crurotarsans and basal ornithodirans. The description of thisspecimen reveals new information on the anatomy of the pelvic girdle and hind limb of Gracilisuchus,through a detailed examination of some anatomical regions barely or not previously described, aswell as reinterpretations of previous features. The phylogenetic affinities of Gracilisuchus within theArchosauria remain to be tested, but Gracilisuchus shares two putative synapomorphies with somenon-crocodyliform crocodylomorphs, providing tentative support for the monophyly of Sphenosuchia(e.g., Sereno & Wild 1992; Wu & Chatterjee 1993) and the close relationship of Gracilisuchusto that clade. These characteristics are: (i) the morphology and poor development of the femoralfourth trochanter, closely resembling the condition of Pseudhesperosuchus and Trialestes; and (ii) apoor anterior development of the femoral head, shared with Pseudhesperosuchus. On the other handthere are characters that reject the inclusion of Gracilisuchus within Crocodylomorpha (Nesbitt2011), such as the absence of an imperforated acetabulum, and that rather suggests a sister-taxonposition to Crocodylomorpha.Fil: Lecuona, Agustina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Desojo, Julia Brenda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaRoyal Society of Edinburgh2011-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68133Lecuona, Agustina; Desojo, Julia Brenda; Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia); Royal Society of Edinburgh; Earth and Environmental Science Transactions of the Royal Society of Edinburgh; 102; 2; 6-2011; 105-1281755-6910CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S1755691011000181info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/hind-limb-osteology-of-gracilisuchus-stipanicicorum-archosauria-pseudosuchia/59536E6E231854238834E16C6CEF87F5info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:45:14Zoai:ri.conicet.gov.ar:11336/68133instacron: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:34982025-11-05 09:45:14.379CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
title Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
spellingShingle Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
Lecuona, Agustina
Appendicular Anatomy
Argentina
ChaÑAres Formation
Pelvic Girdle
Pseudosuchia
Triassic
title_short Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
title_full Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
title_fullStr Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
title_full_unstemmed Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
title_sort Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)
dc.creator.none.fl_str_mv Lecuona, Agustina
Desojo, Julia Brenda
author Lecuona, Agustina
author_facet Lecuona, Agustina
Desojo, Julia Brenda
author_role author
author2 Desojo, Julia Brenda
author2_role author
dc.subject.none.fl_str_mv Appendicular Anatomy
Argentina
ChaÑAres Formation
Pelvic Girdle
Pseudosuchia
Triassic
topic Appendicular Anatomy
Argentina
ChaÑAres Formation
Pelvic Girdle
Pseudosuchia
Triassic
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Gracilisuchus stipanicicorum Romer, 1972, from the Middle-Late Triassic of the Ischigualasto-Villa Unión Basin of Argentina, is an extinct pseudosuchian archosaur on the stem toCrocodylomorpha. The pelvic girdle and hind limb anatomy of a referred specimen of Gracilisuchusstipanicicorum is described and compared with that from a broad range of archosauriform taxa,including basal members such as crurotarsans and basal ornithodirans. The description of thisspecimen reveals new information on the anatomy of the pelvic girdle and hind limb of Gracilisuchus,through a detailed examination of some anatomical regions barely or not previously described, aswell as reinterpretations of previous features. The phylogenetic affinities of Gracilisuchus within theArchosauria remain to be tested, but Gracilisuchus shares two putative synapomorphies with somenon-crocodyliform crocodylomorphs, providing tentative support for the monophyly of Sphenosuchia(e.g., Sereno & Wild 1992; Wu & Chatterjee 1993) and the close relationship of Gracilisuchusto that clade. These characteristics are: (i) the morphology and poor development of the femoralfourth trochanter, closely resembling the condition of Pseudhesperosuchus and Trialestes; and (ii) apoor anterior development of the femoral head, shared with Pseudhesperosuchus. On the other handthere are characters that reject the inclusion of Gracilisuchus within Crocodylomorpha (Nesbitt2011), such as the absence of an imperforated acetabulum, and that rather suggests a sister-taxonposition to Crocodylomorpha.
Fil: Lecuona, Agustina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Desojo, Julia Brenda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
description Gracilisuchus stipanicicorum Romer, 1972, from the Middle-Late Triassic of the Ischigualasto-Villa Unión Basin of Argentina, is an extinct pseudosuchian archosaur on the stem toCrocodylomorpha. The pelvic girdle and hind limb anatomy of a referred specimen of Gracilisuchusstipanicicorum is described and compared with that from a broad range of archosauriform taxa,including basal members such as crurotarsans and basal ornithodirans. The description of thisspecimen reveals new information on the anatomy of the pelvic girdle and hind limb of Gracilisuchus,through a detailed examination of some anatomical regions barely or not previously described, aswell as reinterpretations of previous features. The phylogenetic affinities of Gracilisuchus within theArchosauria remain to be tested, but Gracilisuchus shares two putative synapomorphies with somenon-crocodyliform crocodylomorphs, providing tentative support for the monophyly of Sphenosuchia(e.g., Sereno & Wild 1992; Wu & Chatterjee 1993) and the close relationship of Gracilisuchusto that clade. These characteristics are: (i) the morphology and poor development of the femoralfourth trochanter, closely resembling the condition of Pseudhesperosuchus and Trialestes; and (ii) apoor anterior development of the femoral head, shared with Pseudhesperosuchus. On the other handthere are characters that reject the inclusion of Gracilisuchus within Crocodylomorpha (Nesbitt2011), such as the absence of an imperforated acetabulum, and that rather suggests a sister-taxonposition to Crocodylomorpha.
publishDate 2011
dc.date.none.fl_str_mv 2011-06
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/11336/68133
Lecuona, Agustina; Desojo, Julia Brenda; Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia); Royal Society of Edinburgh; Earth and Environmental Science Transactions of the Royal Society of Edinburgh; 102; 2; 6-2011; 105-128
1755-6910
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68133
identifier_str_mv Lecuona, Agustina; Desojo, Julia Brenda; Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia); Royal Society of Edinburgh; Earth and Environmental Science Transactions of the Royal Society of Edinburgh; 102; 2; 6-2011; 105-128
1755-6910
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S1755691011000181
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/hind-limb-osteology-of-gracilisuchus-stipanicicorum-archosauria-pseudosuchia/59536E6E231854238834E16C6CEF87F5
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
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Edinburgh
publisher.none.fl_str_mv Royal Society of Edinburgh
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 13.121305

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