Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic
Abstract The dawn of dinosaurs is marked by the appearance of the saurischian lineages in the Late Triassic fossil record, around 230 million years ago. This early burst of diversification of the group is majoritarily represented by sauropodomorphs and herrerasaurids in late Carnian to early Norian...
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Nature Portfolio
2025-05-01
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| Online Access: | https://doi.org/10.1038/s41598-025-99362-5 |
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| author | Voltaire D. Paes Neto Flávio A. Pretto Agustín G. Martinelli Francesco Battista Maurício Garcia Rodrigo T. Müller Mauricio R. Schmitt Tomaz P. Melo Heitor Francischini Cesar L. Schultz Felipe Pinheiro Marina B. Soares Alexander W. Kellner |
| author_facet | Voltaire D. Paes Neto Flávio A. Pretto Agustín G. Martinelli Francesco Battista Maurício Garcia Rodrigo T. Müller Mauricio R. Schmitt Tomaz P. Melo Heitor Francischini Cesar L. Schultz Felipe Pinheiro Marina B. Soares Alexander W. Kellner |
| author_sort | Voltaire D. Paes Neto |
| collection | DOAJ |
| description | Abstract The dawn of dinosaurs is marked by the appearance of the saurischian lineages in the Late Triassic fossil record, around 230 million years ago. This early burst of diversification of the group is majoritarily represented by sauropodomorphs and herrerasaurids in late Carnian to early Norian of Brazil, Argentina, India, and Zimbabwe. However, “silesaurids”, an older and enigmatic group of quadrupedal dinosauromorphs, were recently found, in some works, as stem ornithischians. In this scenario, dinosaurs would have originated far earlier than the end of the Ladinian, a time in which “silesaurids” are already spread through Gondwana. Despite being also recorded in more recent dinosaur-bearing beds in Brazil, “silesaurids” are absent in strata from the early Carnian, an important time frame for dinosaur evolution. Here we present a new “silesaurid”, Itaguyra occulta gen. et sp. nov., that fills up the remaining gap of occurrence of these dinosauromorphs and provides new clues to the success of these putative early ornithischians. |
| format | Article |
| id | doaj-art-b5bd5b5238b94714a2184bcfa67fa018 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-b5bd5b5238b94714a2184bcfa67fa0182025-08-20T02:03:30ZengNature PortfolioScientific Reports2045-23222025-05-0115111310.1038/s41598-025-99362-5Continuous presence of dinosauromorphs in South America throughout the Middle to the Late TriassicVoltaire D. Paes Neto0Flávio A. Pretto1Agustín G. Martinelli2Francesco Battista3Maurício Garcia4Rodrigo T. Müller5Mauricio R. Schmitt6Tomaz P. Melo7Heitor Francischini8Cesar L. Schultz9Felipe Pinheiro10Marina B. Soares11Alexander W. Kellner12Laboratório de Sistemática e Tafonomia de Vertebrados Fósseis (LAPUG), Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de JaneiroCentro de Apoio à Pesquisa Paleontológica, Universidade Federal de Santa MariaSección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”- CONICETLaboratório de Paleontologia de Vertebrados, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do SulCentro de Apoio à Pesquisa Paleontológica, Universidade Federal de Santa MariaCentro de Apoio à Pesquisa Paleontológica, Universidade Federal de Santa MariaPrograma de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do SulPrograma de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do SulLaboratório de Paleontologia de Vertebrados, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do SulPrograma de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do SulLaboratório de Paleobiologia, Universidade Federal do Pampa – Campus São GabrielLaboratório de Sistemática e Tafonomia de Vertebrados Fósseis (LAPUG), Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de JaneiroLaboratório de Sistemática e Tafonomia de Vertebrados Fósseis (LAPUG), Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de JaneiroAbstract The dawn of dinosaurs is marked by the appearance of the saurischian lineages in the Late Triassic fossil record, around 230 million years ago. This early burst of diversification of the group is majoritarily represented by sauropodomorphs and herrerasaurids in late Carnian to early Norian of Brazil, Argentina, India, and Zimbabwe. However, “silesaurids”, an older and enigmatic group of quadrupedal dinosauromorphs, were recently found, in some works, as stem ornithischians. In this scenario, dinosaurs would have originated far earlier than the end of the Ladinian, a time in which “silesaurids” are already spread through Gondwana. Despite being also recorded in more recent dinosaur-bearing beds in Brazil, “silesaurids” are absent in strata from the early Carnian, an important time frame for dinosaur evolution. Here we present a new “silesaurid”, Itaguyra occulta gen. et sp. nov., that fills up the remaining gap of occurrence of these dinosauromorphs and provides new clues to the success of these putative early ornithischians.https://doi.org/10.1038/s41598-025-99362-5 |
| spellingShingle | Voltaire D. Paes Neto Flávio A. Pretto Agustín G. Martinelli Francesco Battista Maurício Garcia Rodrigo T. Müller Mauricio R. Schmitt Tomaz P. Melo Heitor Francischini Cesar L. Schultz Felipe Pinheiro Marina B. Soares Alexander W. Kellner Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic Scientific Reports |
| title | Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic |
| title_full | Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic |
| title_fullStr | Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic |
| title_full_unstemmed | Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic |
| title_short | Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic |
| title_sort | continuous presence of dinosauromorphs in south america throughout the middle to the late triassic |
| url | https://doi.org/10.1038/s41598-025-99362-5 |
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