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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/47253
Acceder
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network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-22T11:06:25Zoai: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:34982025-10-22 11:06:25.534CONICET 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
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 12.982451

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