The stem-archosaur evolutionary radiation in South America

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dc.contributor.authorEzcurra, Martín D.
dc.contributor.authorMontefeltro, Felipe C. [UNESP]
dc.contributor.authorPinheiro, Felipe L.
dc.contributor.authorTrotteyn, M. Jimena
dc.contributor.authorGentil, Adriel R.
dc.contributor.authorLehmann, Oscar E.R.
dc.contributor.authorPradelli, Luciano A.
dc.contributor.institutionCONICET−Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Pampa
dc.contributor.institutionUniversidad Nacional de San Juan
dc.contributor.institutionCONICET–Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’
dc.date.accessioned2021-06-25T10:13:31Z
dc.date.available2021-06-25T10:13:31Z
dc.date.issued2021-01-01
dc.description.abstractThe oldest archosauromorphs (dinosaurs, birds, crocodiles, and their stem-taxa) are recorded in middle−upper Permian rocks, but it was not after the Permo−Triassic mass extinction that the group shows a substantially high taxonomic richness and ecomorphological disparity. The early evolutionary history of the Archosauromorpha during the Early and Middle Triassic is mainly based on fossils recovered from rocks in southern Africa, Europe and Asia, whereas South America possesses a more complete fossil record of the group only in the Late Triassic. Here we revisit, discuss, and reanalyse the non-archosaurian archosauromorph fossil record of the current-day South America. The Early Triassic archosauromorph record in this continent is still scarce, but it documents the early evolution of the group in western Pangaea and is crucial to understand more globally the biotic recovery after the Permo−Triassic mass extinction. The Middle Triassic record is extremely scarce, but the Late Triassic archosauromorph assemblage of South America is among the most diverse and abundant worldwide. The last decade has witnessed a considerable improvement in our knowledge of the record, taxonomy, phylogeny, and macroevolution of the group with the input from the South American fossils. Nevertheless, a considerable amount of research is needed and ideally should be focused on some particular aspects of the Triassic evolutionary radiation of Archosauromorpha. Among them, the Early Triassic record should be expanded, more numerous and more complete Middle Triassic archosauromorph specimens are crucial to have a more complete picture of the evolution of the group, and the taxonomy of groups like proterochampsids and hyperodapedontine rhynchosaurs should be clarified through detailed anatomical work.en
dc.description.affiliationSección Paleontología de Vertebrados CONICET−Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Av. Ángel Gallardo 470
dc.description.affiliationLaboratório de Paleontologia e Evolução de Ilha Solteira UNESP
dc.description.affiliationLaboratório de Paleobiologia Universidade Federal do Pampa
dc.description.affiliationInstituto de Geología (CONICET−CIGEOBIO) Departamento de Biología Departamento de Geología Universidad Nacional de San Juan, Av. Ignacio de la Rosa 590 (oeste)
dc.description.affiliationLaboratorio de Anatomía Comparada y Evolución de los Vertebrados CONICET–Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Ángel Gallardo 470
dc.description.affiliationUnespLaboratório de Paleontologia e Evolução de Ilha Solteira UNESP
dc.description.sponsorshipPaleontological Society
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 305758/2017–9
dc.description.sponsorshipIdCNPq: 407969/2016–0
dc.identifierhttp://dx.doi.org/10.1016/j.jsames.2020.102935
dc.identifier.citationJournal of South American Earth Sciences, v. 105.
dc.identifier.doi10.1016/j.jsames.2020.102935
dc.identifier.issn0895-9811
dc.identifier.scopus2-s2.0-85092719739
dc.identifier.urihttp://hdl.handle.net/11449/205328
dc.language.isoeng
dc.relation.ispartofJournal of South American Earth Sciences
dc.sourceScopus
dc.subjectAnatomy
dc.subjectArchosauromorpha
dc.subjectArgentina
dc.subjectBrazil
dc.subjectMacroevolution
dc.subjectPhylogeny
dc.subjectProterochampsidae
dc.subjectProterosuchidae
dc.subjectRhynchosauria
dc.subjectUruguay
dc.titleThe stem-archosaur evolutionary radiation in South Americaen
dc.typeArtigo
unesp.author.orcid0000-0002-6000-6450[1]
unesp.author.orcid0000-0002-8624-4297[4]
unesp.author.orcid0000-0001-8191-8478[5]
unesp.author.orcid0000-0002-2582-372X[6]

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