New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina

Autores
Lecuona, Agustina; Desojo, Julia Brenda; Cerda, Ignacio Alejandro
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Lecuona, Agustina. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina
Fil: Desojo, Julia Brenda. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados. CONICET. Buenos Aires, Argentina.
Fil: Cerda, Ignacio. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina
Fil: Cerda, Ignacio. Museo Provincial “Carlos Ameghino”. Río Negro, Argentina.
Gracilisuchus stipanicicorum Romer, 1972 is a basal suchian from the Late Triassic Chañares Formation (Argentina), nested in the recently erected Gracilisuchidae, along with Turfanosuchus dabanensis Young, 1973 and Yonghesuchus sangbiensis Wu et al., 2001 from China. The six known specimens of Gracilisuchus Romer, 1972 preserve most of the skeleton, lacking only most of the shoulder girdle and forelimb. Our latest fieldwork has recovered two specimens that preserve previously unknown elements, including the humerus, radius, and ulna, as well as the femur, presacral vertebrae, and paramedian osteoderms. The femur and osteoderms were histologically sectioned, which has never been done for Gracilisuchidae. The anatomical analysis revealed characters in the new elements that improve our understanding of the anatomy of Gracilisuchus. Bone histology revealed that the specimen CRILAR PV 490 died before reaching somatic maturity and that growth was relatively slow compared to other pseudosuchians. This study increases the knowledge of the anatomy of Gracilisuchus and represents a new step towards a broader understanding of Gracilisuchidae and basal suchian clades.
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Materia
Ciencias Exactas y Naturales
Chañares Formation
Triassic
Pseudosuchia
Gracilisuchidae
Bone Histology
Lamellar Bone Tissue
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/5828
Acceder
id RIDUNRN_34123560b254fbac881392a74f6dfd45
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network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), ArgentinaLecuona, AgustinaDesojo, Julia BrendaCerda, Ignacio AlejandroCiencias Exactas y NaturalesChañares FormationTriassicPseudosuchiaGracilisuchidaeBone HistologyLamellar Bone TissueCiencias Exactas y NaturalesFil: Lecuona, Agustina. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, ArgentinaFil: Desojo, Julia Brenda. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados. CONICET. Buenos Aires, Argentina.Fil: Cerda, Ignacio. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, ArgentinaFil: Cerda, Ignacio. Museo Provincial “Carlos Ameghino”. Río Negro, Argentina.Gracilisuchus stipanicicorum Romer, 1972 is a basal suchian from the Late Triassic Chañares Formation (Argentina), nested in the recently erected Gracilisuchidae, along with Turfanosuchus dabanensis Young, 1973 and Yonghesuchus sangbiensis Wu et al., 2001 from China. The six known specimens of Gracilisuchus Romer, 1972 preserve most of the skeleton, lacking only most of the shoulder girdle and forelimb. Our latest fieldwork has recovered two specimens that preserve previously unknown elements, including the humerus, radius, and ulna, as well as the femur, presacral vertebrae, and paramedian osteoderms. The femur and osteoderms were histologically sectioned, which has never been done for Gracilisuchidae. The anatomical analysis revealed characters in the new elements that improve our understanding of the anatomy of Gracilisuchus. Bone histology revealed that the specimen CRILAR PV 490 died before reaching somatic maturity and that growth was relatively slow compared to other pseudosuchians. This study increases the knowledge of the anatomy of Gracilisuchus and represents a new step towards a broader understanding of Gracilisuchidae and basal suchian clades.-Scientifiques du Muséum National d’Histoire Naturelle2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfLecuona, Agustina., Desojo, Julia B. y Cerda, Ignacio A. (2020) New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina. Comptes Rendus Palevol; 19 (3); 40-62.1777-571Xhttp://sciencepress.mnhn.fr/sites/default/files/articles/pdf/comptes-rendus-palevol-2020-v19-a3.pdfhttp://rid.unrn.edu.ar/handle/20.500.12049/5828eng19 (3)Comptes Rendus Palevolinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:04Zoai:rid.unrn.edu.ar:20.500.12049/5828instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:04.394RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
title New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
spellingShingle New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
Lecuona, Agustina
Ciencias Exactas y Naturales
Chañares Formation
Triassic
Pseudosuchia
Gracilisuchidae
Bone Histology
Lamellar Bone Tissue
Ciencias Exactas y Naturales
title_short New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
title_full New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
title_fullStr New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
title_full_unstemmed New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
title_sort New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina
dc.creator.none.fl_str_mv Lecuona, Agustina
Desojo, Julia Brenda
Cerda, Ignacio Alejandro
author Lecuona, Agustina
author_facet Lecuona, Agustina
Desojo, Julia Brenda
Cerda, Ignacio Alejandro
author_role author
author2 Desojo, Julia Brenda
Cerda, Ignacio Alejandro
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Chañares Formation
Triassic
Pseudosuchia
Gracilisuchidae
Bone Histology
Lamellar Bone Tissue
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Chañares Formation
Triassic
Pseudosuchia
Gracilisuchidae
Bone Histology
Lamellar Bone Tissue
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Lecuona, Agustina. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina
Fil: Desojo, Julia Brenda. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados. CONICET. Buenos Aires, Argentina.
Fil: Cerda, Ignacio. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina
Fil: Cerda, Ignacio. Museo Provincial “Carlos Ameghino”. Río Negro, Argentina.
Gracilisuchus stipanicicorum Romer, 1972 is a basal suchian from the Late Triassic Chañares Formation (Argentina), nested in the recently erected Gracilisuchidae, along with Turfanosuchus dabanensis Young, 1973 and Yonghesuchus sangbiensis Wu et al., 2001 from China. The six known specimens of Gracilisuchus Romer, 1972 preserve most of the skeleton, lacking only most of the shoulder girdle and forelimb. Our latest fieldwork has recovered two specimens that preserve previously unknown elements, including the humerus, radius, and ulna, as well as the femur, presacral vertebrae, and paramedian osteoderms. The femur and osteoderms were histologically sectioned, which has never been done for Gracilisuchidae. The anatomical analysis revealed characters in the new elements that improve our understanding of the anatomy of Gracilisuchus. Bone histology revealed that the specimen CRILAR PV 490 died before reaching somatic maturity and that growth was relatively slow compared to other pseudosuchians. This study increases the knowledge of the anatomy of Gracilisuchus and represents a new step towards a broader understanding of Gracilisuchidae and basal suchian clades.
-
description Fil: Lecuona, Agustina. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina
publishDate 2020
dc.date.none.fl_str_mv 2020
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 Lecuona, Agustina., Desojo, Julia B. y Cerda, Ignacio A. (2020) New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina. Comptes Rendus Palevol; 19 (3); 40-62.
1777-571X
http://sciencepress.mnhn.fr/sites/default/files/articles/pdf/comptes-rendus-palevol-2020-v19-a3.pdf
http://rid.unrn.edu.ar/handle/20.500.12049/5828
identifier_str_mv Lecuona, Agustina., Desojo, Julia B. y Cerda, Ignacio A. (2020) New information on the anatomy and histology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia) from the Chañares Formation (early Carnian), Argentina. Comptes Rendus Palevol; 19 (3); 40-62.
1777-571X
url http://sciencepress.mnhn.fr/sites/default/files/articles/pdf/comptes-rendus-palevol-2020-v19-a3.pdf
http://rid.unrn.edu.ar/handle/20.500.12049/5828
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 19 (3)
Comptes Rendus Palevol
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Scientifiques du Muséum National d’Histoire Naturelle
publisher.none.fl_str_mv Scientifiques du Muséum National d’Histoire Naturelle
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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score 12.559606

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