Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina

Autores
Coria, Rodolfo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The osteology of the Hadrosauridae dinosaurs from Argentina was studied in detail and their phylogeny was analyzed within a cladistic framework. The species "Kritosaurus" australis Bonaparte et al., Secernosaurus koerneri Brett-Surman, and a new genus and species from the Allen Formation (Campanian-Maastrichtian) of the La Pampa Province are diagnosed by the identification of several autopomorphies. A new generic combination for "Kritosaurus" australis is proposed because of the absence of derived common features with Kritosaurus Brown. Remains from the Allen Formation of the Río Negro Province previously assigned to Lambeosaurinae are preliminarily discussed and included as a terminal taxon in the phylogenetic analysis. The cladistic analysis was made scoring 125 cranial, dental and postcranial characters distributed among 26 taxa of ornithischian dinosaurs. The reduced strict consensus shows to "Kritosaurus" australis and the Lambeosaurinae indet. from Río Negro as a monophyletic sister taxon of the group formed by Parasaurolophus + (Hypacrosaurus, Corythosaurus and Lambeosaurus) by equivocally sharing the presence of a blunt and dorsoventrally low maxillary ascending process. Secernosaurus, the new genus and species from La Pampa Province, and the Hadrosauridae indet. from the Coli Toro Formation are placed within Euhadrosauria more derived than Telmatosaurus although their phylogenetic relationships within the clade remain unsolved. The Hadrosauridae record from Argentina is interpreted as a geodispersal event of North American lambeosaurines, which reached South America through land-bridge connections during the Campanian-Maastrichtian and not as vicariant forms of basal Hadrosauridae present in South America before such intercontinental connection.
Sesiones libres
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Paleontología
Phylogeny
Paleobiogeography
Hadrosaurid dinosaurs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/16843
Acceder
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network_name_str SEDICI (UNLP)
spelling Phylogeny and paleobiogeography of hadrosaurid dinosaurs from ArgentinaCoria, RodolfoCiencias NaturalesPaleontologíaPhylogenyPaleobiogeographyHadrosaurid dinosaursThe osteology of the Hadrosauridae dinosaurs from Argentina was studied in detail and their phylogeny was analyzed within a cladistic framework. The species "Kritosaurus" australis Bonaparte et al., Secernosaurus koerneri Brett-Surman, and a new genus and species from the Allen Formation (Campanian-Maastrichtian) of the La Pampa Province are diagnosed by the identification of several autopomorphies. A new generic combination for "Kritosaurus" australis is proposed because of the absence of derived common features with Kritosaurus Brown. Remains from the Allen Formation of the Río Negro Province previously assigned to Lambeosaurinae are preliminarily discussed and included as a terminal taxon in the phylogenetic analysis. The cladistic analysis was made scoring 125 cranial, dental and postcranial characters distributed among 26 taxa of ornithischian dinosaurs. The reduced strict consensus shows to "Kritosaurus" australis and the Lambeosaurinae indet. from Río Negro as a monophyletic sister taxon of the group formed by Parasaurolophus + (Hypacrosaurus, Corythosaurus and Lambeosaurus) by equivocally sharing the presence of a blunt and dorsoventrally low maxillary ascending process. Secernosaurus, the new genus and species from La Pampa Province, and the Hadrosauridae indet. from the Coli Toro Formation are placed within Euhadrosauria more derived than Telmatosaurus although their phylogenetic relationships within the clade remain unsolved. The Hadrosauridae record from Argentina is interpreted as a geodispersal event of North American lambeosaurines, which reached South America through land-bridge connections during the Campanian-Maastrichtian and not as vicariant forms of basal Hadrosauridae present in South America before such intercontinental connection.Sesiones libresFacultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/16843enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2info:eu-repo/semantics/reference/hdl/10915/25738info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:25:54Zoai:sedici.unlp.edu.ar:10915/16843Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:25:54.906SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
title Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
spellingShingle Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
Coria, Rodolfo
Ciencias Naturales
Paleontología
Phylogeny
Paleobiogeography
Hadrosaurid dinosaurs
title_short Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
title_full Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
title_fullStr Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
title_full_unstemmed Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
title_sort Phylogeny and paleobiogeography of hadrosaurid dinosaurs from Argentina
dc.creator.none.fl_str_mv Coria, Rodolfo
author Coria, Rodolfo
author_facet Coria, Rodolfo
author_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontología
Phylogeny
Paleobiogeography
Hadrosaurid dinosaurs
topic Ciencias Naturales
Paleontología
Phylogeny
Paleobiogeography
Hadrosaurid dinosaurs
dc.description.none.fl_txt_mv The osteology of the Hadrosauridae dinosaurs from Argentina was studied in detail and their phylogeny was analyzed within a cladistic framework. The species "Kritosaurus" australis Bonaparte et al., Secernosaurus koerneri Brett-Surman, and a new genus and species from the Allen Formation (Campanian-Maastrichtian) of the La Pampa Province are diagnosed by the identification of several autopomorphies. A new generic combination for "Kritosaurus" australis is proposed because of the absence of derived common features with Kritosaurus Brown. Remains from the Allen Formation of the Río Negro Province previously assigned to Lambeosaurinae are preliminarily discussed and included as a terminal taxon in the phylogenetic analysis. The cladistic analysis was made scoring 125 cranial, dental and postcranial characters distributed among 26 taxa of ornithischian dinosaurs. The reduced strict consensus shows to "Kritosaurus" australis and the Lambeosaurinae indet. from Río Negro as a monophyletic sister taxon of the group formed by Parasaurolophus + (Hypacrosaurus, Corythosaurus and Lambeosaurus) by equivocally sharing the presence of a blunt and dorsoventrally low maxillary ascending process. Secernosaurus, the new genus and species from La Pampa Province, and the Hadrosauridae indet. from the Coli Toro Formation are placed within Euhadrosauria more derived than Telmatosaurus although their phylogenetic relationships within the clade remain unsolved. The Hadrosauridae record from Argentina is interpreted as a geodispersal event of North American lambeosaurines, which reached South America through land-bridge connections during the Campanian-Maastrichtian and not as vicariant forms of basal Hadrosauridae present in South America before such intercontinental connection.
Sesiones libres
Facultad de Ciencias Naturales y Museo
description The osteology of the Hadrosauridae dinosaurs from Argentina was studied in detail and their phylogeny was analyzed within a cladistic framework. The species "Kritosaurus" australis Bonaparte et al., Secernosaurus koerneri Brett-Surman, and a new genus and species from the Allen Formation (Campanian-Maastrichtian) of the La Pampa Province are diagnosed by the identification of several autopomorphies. A new generic combination for "Kritosaurus" australis is proposed because of the absence of derived common features with Kritosaurus Brown. Remains from the Allen Formation of the Río Negro Province previously assigned to Lambeosaurinae are preliminarily discussed and included as a terminal taxon in the phylogenetic analysis. The cladistic analysis was made scoring 125 cranial, dental and postcranial characters distributed among 26 taxa of ornithischian dinosaurs. The reduced strict consensus shows to "Kritosaurus" australis and the Lambeosaurinae indet. from Río Negro as a monophyletic sister taxon of the group formed by Parasaurolophus + (Hypacrosaurus, Corythosaurus and Lambeosaurus) by equivocally sharing the presence of a blunt and dorsoventrally low maxillary ascending process. Secernosaurus, the new genus and species from La Pampa Province, and the Hadrosauridae indet. from the Coli Toro Formation are placed within Euhadrosauria more derived than Telmatosaurus although their phylogenetic relationships within the clade remain unsolved. The Hadrosauridae record from Argentina is interpreted as a geodispersal event of North American lambeosaurines, which reached South America through land-bridge connections during the Campanian-Maastrichtian and not as vicariant forms of basal Hadrosauridae present in South America before such intercontinental connection.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Resumen
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/16843
url http://sedici.unlp.edu.ar/handle/10915/16843
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2
info:eu-repo/semantics/reference/hdl/10915/25738
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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