Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina
- Autores
- Agnolin, Federico; Rozadilla, Sebastian
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Pisanosaurus mertii was originally described on the basis of an incomplete skeleton from the early Late Triassic (Carnian)of northern Argentina. It is consistently regarded by most authors as a very basal ornithischian, the sister group ofremaining members of the clade. The referral to Ornithischia is based mainly on tooth-bearing bones and toothmorphology. On the other hand, the postcranium is recognized as strikingly plesiomorphic for ornithischians, and even fordinosaurs. The recent description of non-dinosaurian dinosauriforms of the clade Silesauridae having ornithischian-likedentition invites a review of the phylogenetic affinities of Pisanosaurus. In this regard, an overview of the holotypespecimen allows a reanalysis of previous anatomical interpretations of this taxon. The phylogenetic analysis presented heresuggests that Pisanosaurus may be better interpreted as a member of the non-dinosaurian Silesauridae. It shares withsilesaurids reduced denticles on the teeth, teeth fused to maxilla and dentary bone, sacral ribs shared between two sacralvertebrae, lateral side of proximal tibia with a fibular flange, and dorsoventrally flattened pedal ungual phalanges. Thepresent analysis indicates that Pisanosaurus should be removed from the base of the Ornithischia and should no longer beconsidered the oldest representative of this dinosaurian clade.
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina. Fundación de Historia Natural Félix de Azara; Argentina
Fil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina - Materia
-
Pisanosaurus Mertii
Ornithischia
Silesauridae
Late Triassic
Argentina - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/47253
Ver los metadatos del registro completo
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Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of ArgentinaAgnolin, FedericoRozadilla, SebastianPisanosaurus MertiiOrnithischiaSilesauridaeLate TriassicArgentinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Pisanosaurus mertii was originally described on the basis of an incomplete skeleton from the early Late Triassic (Carnian)of northern Argentina. It is consistently regarded by most authors as a very basal ornithischian, the sister group ofremaining members of the clade. The referral to Ornithischia is based mainly on tooth-bearing bones and toothmorphology. On the other hand, the postcranium is recognized as strikingly plesiomorphic for ornithischians, and even fordinosaurs. The recent description of non-dinosaurian dinosauriforms of the clade Silesauridae having ornithischian-likedentition invites a review of the phylogenetic affinities of Pisanosaurus. In this regard, an overview of the holotypespecimen allows a reanalysis of previous anatomical interpretations of this taxon. The phylogenetic analysis presented heresuggests that Pisanosaurus may be better interpreted as a member of the non-dinosaurian Silesauridae. It shares withsilesaurids reduced denticles on the teeth, teeth fused to maxilla and dentary bone, sacral ribs shared between two sacralvertebrae, lateral side of proximal tibia with a fibular flange, and dorsoventrally flattened pedal ungual phalanges. Thepresent analysis indicates that Pisanosaurus should be removed from the base of the Ornithischia and should no longer beconsidered the oldest representative of this dinosaurian clade.Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina. Fundación de Historia Natural Félix de Azara; ArgentinaFil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; ArgentinaCambridge University Press2017-08-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/47253Agnolin, Federico; Rozadilla, Sebastian; Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina; Cambridge University Press; Journal of Systematic Palaeontology; 16; 10; 4-8-2017; 853-8791477-20191478-0941CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/14772019.2017.1352623info:eu-repo/semantics/altIdentifier/doi/10.1080/14772019.2017.1352623info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:10Zoai:ri.conicet.gov.ar:11336/47253instacron: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:34982025-09-29 09:38:10.692CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
title |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
spellingShingle |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina Agnolin, Federico Pisanosaurus Mertii Ornithischia Silesauridae Late Triassic Argentina |
title_short |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
title_full |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
title_fullStr |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
title_full_unstemmed |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
title_sort |
Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina |
dc.creator.none.fl_str_mv |
Agnolin, Federico Rozadilla, Sebastian |
author |
Agnolin, Federico |
author_facet |
Agnolin, Federico Rozadilla, Sebastian |
author_role |
author |
author2 |
Rozadilla, Sebastian |
author2_role |
author |
dc.subject.none.fl_str_mv |
Pisanosaurus Mertii Ornithischia Silesauridae Late Triassic Argentina |
topic |
Pisanosaurus Mertii Ornithischia Silesauridae Late Triassic Argentina |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Pisanosaurus mertii was originally described on the basis of an incomplete skeleton from the early Late Triassic (Carnian)of northern Argentina. It is consistently regarded by most authors as a very basal ornithischian, the sister group ofremaining members of the clade. The referral to Ornithischia is based mainly on tooth-bearing bones and toothmorphology. On the other hand, the postcranium is recognized as strikingly plesiomorphic for ornithischians, and even fordinosaurs. The recent description of non-dinosaurian dinosauriforms of the clade Silesauridae having ornithischian-likedentition invites a review of the phylogenetic affinities of Pisanosaurus. In this regard, an overview of the holotypespecimen allows a reanalysis of previous anatomical interpretations of this taxon. The phylogenetic analysis presented heresuggests that Pisanosaurus may be better interpreted as a member of the non-dinosaurian Silesauridae. It shares withsilesaurids reduced denticles on the teeth, teeth fused to maxilla and dentary bone, sacral ribs shared between two sacralvertebrae, lateral side of proximal tibia with a fibular flange, and dorsoventrally flattened pedal ungual phalanges. Thepresent analysis indicates that Pisanosaurus should be removed from the base of the Ornithischia and should no longer beconsidered the oldest representative of this dinosaurian clade. Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina. Fundación de Historia Natural Félix de Azara; Argentina Fil: Rozadilla, Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina |
description |
Pisanosaurus mertii was originally described on the basis of an incomplete skeleton from the early Late Triassic (Carnian)of northern Argentina. It is consistently regarded by most authors as a very basal ornithischian, the sister group ofremaining members of the clade. The referral to Ornithischia is based mainly on tooth-bearing bones and toothmorphology. On the other hand, the postcranium is recognized as strikingly plesiomorphic for ornithischians, and even fordinosaurs. The recent description of non-dinosaurian dinosauriforms of the clade Silesauridae having ornithischian-likedentition invites a review of the phylogenetic affinities of Pisanosaurus. In this regard, an overview of the holotypespecimen allows a reanalysis of previous anatomical interpretations of this taxon. The phylogenetic analysis presented heresuggests that Pisanosaurus may be better interpreted as a member of the non-dinosaurian Silesauridae. It shares withsilesaurids reduced denticles on the teeth, teeth fused to maxilla and dentary bone, sacral ribs shared between two sacralvertebrae, lateral side of proximal tibia with a fibular flange, and dorsoventrally flattened pedal ungual phalanges. Thepresent analysis indicates that Pisanosaurus should be removed from the base of the Ornithischia and should no longer beconsidered the oldest representative of this dinosaurian clade. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08-04 |
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/11336/47253 Agnolin, Federico; Rozadilla, Sebastian; Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina; Cambridge University Press; Journal of Systematic Palaeontology; 16; 10; 4-8-2017; 853-879 1477-2019 1478-0941 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/47253 |
identifier_str_mv |
Agnolin, Federico; Rozadilla, Sebastian; Phylogenetic reassessment of Pisanosaurus mertii Casamiquela, 1967, a basal dinosauriform from the Late Triassic of Argentina; Cambridge University Press; Journal of Systematic Palaeontology; 16; 10; 4-8-2017; 853-879 1477-2019 1478-0941 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://www.tandfonline.com/doi/full/10.1080/14772019.2017.1352623 info:eu-repo/semantics/altIdentifier/doi/10.1080/14772019.2017.1352623 |
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 |
Cambridge University Press |
publisher.none.fl_str_mv |
Cambridge University Press |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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1844613206325067776 |
score |
13.070432 |