Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/30742 |
Resumo: | Proterochampsidae is an extinct group of medium-sized predators endemic to South America, with its fossil record restricted to Triassic continental deposits in Brazil and Argentina. Due to their superficial resemblance to animals such as alligators and crocodiles, these creatures have historically been interpreted as semi-aquatic predators, believed to have had a similar lifestyle and feeding niche to the ecological role occupied by crocodilians today. However, there is still a scarcity of studies that rigorously test these inferences concerning the group. Facing this challenge, the aim of this thesis is to assess evolutionary convergence and functional morphology in proterochampsids through morphological and biomechanical studies, focusing on the Brazilian proterochampsid Proterochampsa nodosa. The first part of the thesis, in addition to the osteological study and anatomical redescriptions of P. nodosa, focuses on the taxonomy of P. nodosa and anatomical comparisons with its sister species from Argentina, P. barrionuevoi. A detailed description of the anatomy of P. nodosa has improved the taxon's diagnosis and clarified the distinctions between the two Proterochampsa species, reinforcing the taxonomic validity of these taxa. Regarding the behavior and feeding mechanics of P. nodosa, investigated in the second part of the study, it appears that Proterochampsa would have been capable of developing a predation pattern similar to that of gharials and false gharials, as inferrerd by the similar distribution of stresses on the long mandibles, especially when subjected to the anterior biting simulation. The biomechanical study compared the jaw mechanics of Proterochampsa with that of Alligator mississippiensis (the American alligator) and Tomistoma schlegelii (the false gharial). Finite element analysis indicates that Proterochampsa would have had a bite force capability comparable to that of Alligator mississippiensis, although subject to higher bending stresses. Furthermore, the study of adductor musculature revealed that, despite differences in muscle conformation, Proterochampsa would have had the ability to achieve comparable results, albeit through different means. In conclusion, it was observed that while this muscular arrangement allowed the extinct taxon to exhibit behaviors analogous to those of extant forms, the impact and distribution of stresses resulting from these habits were considerably more pronounced. |
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2023-12-01T11:04:38Z2023-12-01T11:04:38Z2023-09-26http://repositorio.ufsm.br/handle/1/30742Proterochampsidae is an extinct group of medium-sized predators endemic to South America, with its fossil record restricted to Triassic continental deposits in Brazil and Argentina. Due to their superficial resemblance to animals such as alligators and crocodiles, these creatures have historically been interpreted as semi-aquatic predators, believed to have had a similar lifestyle and feeding niche to the ecological role occupied by crocodilians today. However, there is still a scarcity of studies that rigorously test these inferences concerning the group. Facing this challenge, the aim of this thesis is to assess evolutionary convergence and functional morphology in proterochampsids through morphological and biomechanical studies, focusing on the Brazilian proterochampsid Proterochampsa nodosa. The first part of the thesis, in addition to the osteological study and anatomical redescriptions of P. nodosa, focuses on the taxonomy of P. nodosa and anatomical comparisons with its sister species from Argentina, P. barrionuevoi. A detailed description of the anatomy of P. nodosa has improved the taxon's diagnosis and clarified the distinctions between the two Proterochampsa species, reinforcing the taxonomic validity of these taxa. Regarding the behavior and feeding mechanics of P. nodosa, investigated in the second part of the study, it appears that Proterochampsa would have been capable of developing a predation pattern similar to that of gharials and false gharials, as inferrerd by the similar distribution of stresses on the long mandibles, especially when subjected to the anterior biting simulation. The biomechanical study compared the jaw mechanics of Proterochampsa with that of Alligator mississippiensis (the American alligator) and Tomistoma schlegelii (the false gharial). Finite element analysis indicates that Proterochampsa would have had a bite force capability comparable to that of Alligator mississippiensis, although subject to higher bending stresses. Furthermore, the study of adductor musculature revealed that, despite differences in muscle conformation, Proterochampsa would have had the ability to achieve comparable results, albeit through different means. In conclusion, it was observed that while this muscular arrangement allowed the extinct taxon to exhibit behaviors analogous to those of extant forms, the impact and distribution of stresses resulting from these habits were considerably more pronounced.Proterochampsidae é um grupo extinto de predadores de médio porte endêmicos da Américo do Sul, tendo seu registro fóssil restrito a depósitos continentais meso- e neotriássicos do Brasil e da Argentina. Devido à sua similaridade superficial com animais como jacarés e crocodilos, esses animais são historicamente interpretados como predadores semi-aquáticos, onde teriam um hábito de vida e de alimentação similar ao nicho ecológico que os crocodilianos ocupam hoje em dia. No entanto, ainda há uma escassez de trabalhos que testem estas inferências feitas ao grupo. Em frente a esse problema, o objetivo dessa tese é acessar convergência evolutiva e a morfologia funcional de proterocampsídeos a partir de estudos de morfológicos e biomecânicos, utilizando o proterocampsídeo brasileiro Proterochampsa nodosa como foco do estudo. O primeiro trabalho da tese foca, além do estudo osteológico e redescrição anatômica de P. nodosa, na taxonomia de P. nodosa e comparação anatômica de P. nodosa com sua espécie-irmã da Argentina, P. barrionuevoi. A descrição minuciosa da anatomia de P. nodosa permitiu a aprimoração da diagnose do táxon, assim como esclareceu as distinções entre as duas espécies de Proterochampsa, reforçando a validade taxonômica desses táxons. O estudo biomecânico desenvolvido no segundo trabalho comparou a mecânica mandibular de Proterochampsa com a de Alligator mississippiensis (o aligátoramericano) e Tomistoma schlegelii (o falso-gavial) por meio da Análise de Elementos Finitos para inferir sobre o comportamento do táxon extinto. Observou-se que a longa mandíbula de P. nodosa era sujeita a tensões de maneira similar a T. schlegelii, especialmente quando sujeita à simulação mordida próximo à região rostral, o que sugere um padrão de predação semelhante ao de gaviais e falsos-gaviais. A análise de elementos finitos indica que Proterochampsa teria uma capacidade de força de mordida comparável à do modelo de Alligator mississippiensis, no entanto, sendo sujeito a tensões de flexão mais elevadas. Ademais, o estudo da musculatura adutora revelou que, apesar das diferenças na conformação muscular, Proterochampsa teria a capacidade de alcançar resultados comparáveis, embora por meios diferentes. Como conclusão principal, observou-se que, embora esse arranjo muscular permita o táxon extinto exercer comportamentos análogos ao das formas viventes, o impacto e a distribuição das tensões oriundas desse hábito eram consideravelmente mais expressivos.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em Biodiversidade AnimalUFSMBrasilCiências BiológicasAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessPaleontologiaArchosauriformesBiomecânicaPaleontologyArchosauriformesBiomechanicsCNPQ::CIENCIAS BIOLOGICASAcessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformesAssessing convergent evolution in the fossil record: morphology and biomechanics of Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) in relation to crocodyliformesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisPretto, Flávio Augustohttp://lattes.cnpq.br/5336542099318422Pinheiro, Felipe LimaCampos, Alexandre LipariniSchultz, Cesar Leandrovon Baczko, Maria BelenPaes Neto, Voltaire Dutrahttp://lattes.cnpq.br/9282923371984791Oliveira, Daniel de Simão2000000000066006006006006006006006007375f4c7-4c09-4916-b0ee-243869bf06bab449e70f-c5d2-422b-8f38-d8a3a7970529f91b12df-60fa-424c-944e-8de6bb9ea59ee483214c-2ec1-4332-aebe-a0aa837ea5f31bcdbfa7-dd69-4f1c-bca3-43bcb1dea79de25ea2cc-1f85-4bb4-9059-a84406ea8f7b44162d7e-6a91-43ee-b6ba-99598e620b2creponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGBA_2023_OLIVEIRA_DANIEL.pdfTES_PPGBA_2023_OLIVEIRA_DANIEL.pdfTeseapplication/pdf16320253http://repositorio.ufsm.br/bitstream/1/30742/1/TES_PPGBA_2023_OLIVEIRA_DANIEL.pdf634a52f3b32e0c4ed6113e3a5fee2163MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
dc.title.alternative.eng.fl_str_mv |
Assessing convergent evolution in the fossil record: morphology and biomechanics of Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) in relation to crocodyliformes |
title |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
spellingShingle |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes Oliveira, Daniel de Simão Paleontologia Archosauriformes Biomecânica Paleontology Archosauriformes Biomechanics CNPQ::CIENCIAS BIOLOGICAS |
title_short |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
title_full |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
title_fullStr |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
title_full_unstemmed |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
title_sort |
Acessando convergência evolutiva no registro fóssil: morfologia e biomecânica de Proterochampsa nodosa Barberena 1982 (Archosauriformes: Proterochampsidae) e sua relação com os crocodiliformes |
author |
Oliveira, Daniel de Simão |
author_facet |
Oliveira, Daniel de Simão |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pretto, Flávio Augusto |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5336542099318422 |
dc.contributor.advisor-co1.fl_str_mv |
Pinheiro, Felipe Lima |
dc.contributor.referee1.fl_str_mv |
Campos, Alexandre Liparini |
dc.contributor.referee2.fl_str_mv |
Schultz, Cesar Leandro |
dc.contributor.referee3.fl_str_mv |
von Baczko, Maria Belen |
dc.contributor.referee4.fl_str_mv |
Paes Neto, Voltaire Dutra |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9282923371984791 |
dc.contributor.author.fl_str_mv |
Oliveira, Daniel de Simão |
contributor_str_mv |
Pretto, Flávio Augusto Pinheiro, Felipe Lima Campos, Alexandre Liparini Schultz, Cesar Leandro von Baczko, Maria Belen Paes Neto, Voltaire Dutra |
dc.subject.por.fl_str_mv |
Paleontologia Archosauriformes Biomecânica |
topic |
Paleontologia Archosauriformes Biomecânica Paleontology Archosauriformes Biomechanics CNPQ::CIENCIAS BIOLOGICAS |
dc.subject.eng.fl_str_mv |
Paleontology Archosauriformes Biomechanics |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS BIOLOGICAS |
description |
Proterochampsidae is an extinct group of medium-sized predators endemic to South America, with its fossil record restricted to Triassic continental deposits in Brazil and Argentina. Due to their superficial resemblance to animals such as alligators and crocodiles, these creatures have historically been interpreted as semi-aquatic predators, believed to have had a similar lifestyle and feeding niche to the ecological role occupied by crocodilians today. However, there is still a scarcity of studies that rigorously test these inferences concerning the group. Facing this challenge, the aim of this thesis is to assess evolutionary convergence and functional morphology in proterochampsids through morphological and biomechanical studies, focusing on the Brazilian proterochampsid Proterochampsa nodosa. The first part of the thesis, in addition to the osteological study and anatomical redescriptions of P. nodosa, focuses on the taxonomy of P. nodosa and anatomical comparisons with its sister species from Argentina, P. barrionuevoi. A detailed description of the anatomy of P. nodosa has improved the taxon's diagnosis and clarified the distinctions between the two Proterochampsa species, reinforcing the taxonomic validity of these taxa. Regarding the behavior and feeding mechanics of P. nodosa, investigated in the second part of the study, it appears that Proterochampsa would have been capable of developing a predation pattern similar to that of gharials and false gharials, as inferrerd by the similar distribution of stresses on the long mandibles, especially when subjected to the anterior biting simulation. The biomechanical study compared the jaw mechanics of Proterochampsa with that of Alligator mississippiensis (the American alligator) and Tomistoma schlegelii (the false gharial). Finite element analysis indicates that Proterochampsa would have had a bite force capability comparable to that of Alligator mississippiensis, although subject to higher bending stresses. Furthermore, the study of adductor musculature revealed that, despite differences in muscle conformation, Proterochampsa would have had the ability to achieve comparable results, albeit through different means. In conclusion, it was observed that while this muscular arrangement allowed the extinct taxon to exhibit behaviors analogous to those of extant forms, the impact and distribution of stresses resulting from these habits were considerably more pronounced. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-12-01T11:04:38Z |
dc.date.available.fl_str_mv |
2023-12-01T11:04:38Z |
dc.date.issued.fl_str_mv |
2023-09-26 |
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Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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Programa de Pós-Graduação em Biodiversidade Animal |
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UFSM |
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Brasil |
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Ciências Biológicas |
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Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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