Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/14229 |
Resumo: | Abstract Ichnofossils, studied by Paleoichnology, are structures produced as a result of behavioral and physiological activities of organisms of the past. Fossil tracks (footprints), one of the best-known types of ichnofossils (bioturbations), are produced by the interaction of the animal's autopods with the substrate, the latter being deformed in the process. The shape of the autopods, the conditions of the substrate and the locomotion behavior of the trackmaker directly influence the morphology of the tracks. During the beginning of the Cretaceous, a huge sandy paleodesert covered a large area of the Brazilian territory, giving rise later to the eolian sandstones of the Botucatu Formation. Its main fossiliferous content are the tracks and excavations produced by the animals (vertebrates and invertebrates) that lived in the paleodesert, being the region of the Municipality of Araraquara (São Paulo State) the one that presents the greatest quantity and diversity of ichnofossils. The present work had as main objective the morphological and paleoecological analysis of ichnofossils with affinity to non-archosaurian tetrapods from the Botucatu Formation. The descriptions of the tracks and trackways were carried out based on parameters established in the scientific literature, such as width and length of the tracks, oblique pace, stride, pace angulation, trackway width and rotation of the autopods. Several specimens of tracks with affinity to larger mammaliaformes have been described and analyzed, and a new ichnotaxon, Aracoaraichnium leonardii, has been defined. It was possible to determine that the trackmaker of these larger tracks belonged to a different species than the trackmaker of the Brasilichnium tracks, and not an advanced ontogenetic stage. In this way, the trackmaker of A. leonardii represents a new component in the ecological structure of the Botucatu paleodesert. It is inferred that the trackmakers of this ichnotaxon could feed on invertebrates or plant material, depending on the availability of resources, being potential competitors of the trackmakers of Brasilichnium. Tracks with affinity to Lepidosauria (lizards) were also described and analyzed for the first time. Such tracks are pentadactyl, with curved digits. The digit I is directed to the inside of the trackway and opposite the digit V, which is in a posterolateral position. Marks attributed to drag and contact of the tail on the substrate were identified. The icnotaxonomic attribution was tentatively made to the icnogenus Rhyncosauroides, and future analyzes based on new, better preserved specimens may elucidate this issue. From the analysis of the trackways, it was possible to identify three distinct locomotion behaviors, being the typical cursorial gait, a gait where the footprints are rotated in the same direction, diverging from the trackway’s midline, and one where the producer makes stops. The recognition of a new trackmaker with a lizard-like affinity increases the complexity of the ecological web of the Botucatu Formation and contributed to the understanding of the distribution and niche occupation of these animals in the Lower Cretaceous. |
id |
SCAR_d6d61eb5816e68c6579c2bcebf7a2f0f |
---|---|
oai_identifier_str |
oai:repositorio.ufscar.br:ufscar/14229 |
network_acronym_str |
SCAR |
network_name_str |
Repositório Institucional da UFSCAR |
repository_id_str |
4322 |
spelling |
Buck, Pedro VictorFernandes, Marcelo Adornahttp://lattes.cnpq.br/6709493251686592Ghilardi, Aline Marcelehttp://lattes.cnpq.br/5761534317977568http://lattes.cnpq.br/2069207952124984cf2accd8-fc89-456b-ac2c-6191efcf49602021-05-05T11:26:14Z2021-05-05T11:26:14Z2021-03-12BUCK, Pedro Victor. Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior). 2021. Tese (Doutorado em Ecologia e Recursos Naturais) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14229.https://repositorio.ufscar.br/handle/ufscar/14229Abstract Ichnofossils, studied by Paleoichnology, are structures produced as a result of behavioral and physiological activities of organisms of the past. Fossil tracks (footprints), one of the best-known types of ichnofossils (bioturbations), are produced by the interaction of the animal's autopods with the substrate, the latter being deformed in the process. The shape of the autopods, the conditions of the substrate and the locomotion behavior of the trackmaker directly influence the morphology of the tracks. During the beginning of the Cretaceous, a huge sandy paleodesert covered a large area of the Brazilian territory, giving rise later to the eolian sandstones of the Botucatu Formation. Its main fossiliferous content are the tracks and excavations produced by the animals (vertebrates and invertebrates) that lived in the paleodesert, being the region of the Municipality of Araraquara (São Paulo State) the one that presents the greatest quantity and diversity of ichnofossils. The present work had as main objective the morphological and paleoecological analysis of ichnofossils with affinity to non-archosaurian tetrapods from the Botucatu Formation. The descriptions of the tracks and trackways were carried out based on parameters established in the scientific literature, such as width and length of the tracks, oblique pace, stride, pace angulation, trackway width and rotation of the autopods. Several specimens of tracks with affinity to larger mammaliaformes have been described and analyzed, and a new ichnotaxon, Aracoaraichnium leonardii, has been defined. It was possible to determine that the trackmaker of these larger tracks belonged to a different species than the trackmaker of the Brasilichnium tracks, and not an advanced ontogenetic stage. In this way, the trackmaker of A. leonardii represents a new component in the ecological structure of the Botucatu paleodesert. It is inferred that the trackmakers of this ichnotaxon could feed on invertebrates or plant material, depending on the availability of resources, being potential competitors of the trackmakers of Brasilichnium. Tracks with affinity to Lepidosauria (lizards) were also described and analyzed for the first time. Such tracks are pentadactyl, with curved digits. The digit I is directed to the inside of the trackway and opposite the digit V, which is in a posterolateral position. Marks attributed to drag and contact of the tail on the substrate were identified. The icnotaxonomic attribution was tentatively made to the icnogenus Rhyncosauroides, and future analyzes based on new, better preserved specimens may elucidate this issue. From the analysis of the trackways, it was possible to identify three distinct locomotion behaviors, being the typical cursorial gait, a gait where the footprints are rotated in the same direction, diverging from the trackway’s midline, and one where the producer makes stops. The recognition of a new trackmaker with a lizard-like affinity increases the complexity of the ecological web of the Botucatu Formation and contributed to the understanding of the distribution and niche occupation of these animals in the Lower Cretaceous.Os icnofósseis, estudados pela paleoicnologia, são estruturas produzidas em decorrência de atividades comportamentais e fisiológicas dos organismos do passado. As pegadas, um dos tipos mais conhecidos de icnofósseis (bioturbações), são produzidas pela interação dos autopódios do animal com o substrato, sendo este último deformado no processo. O formato dos autopódios, as condições do substrato e o comportamento de locomoção do produtor influenciam diretamente na morfologia das pegadas. Durante o início do Cretáceo, um enorme paleodeserto de areia cobriu grandes extensões do território brasileiro, dando origem posteriormente aos arenitos eólicos da Formação Botucatu. Seu principal conteúdo fossilífero são as pegadas e escavações produzidas pelos animais (vertebrados e invertebrados) que viveram no paleodeserto, sendo a região do Município de Araraquara (Estado de São Paulo) a que apresenta a maior quantidade e diversidade de icnofósseis. O presente trabalho teve como principal objetivo a análise morfológica e paleoecológica de icnofósseis com afinidade a tetrápodes não-arcossauros provenientes da Formação Botucatu. As descrições das pegadas e pistas foram realizadas com base em parâmetros estabelecidos na literatura científica, como largura e comprimento das pegadas, passo oblíquo, passo duplo, ângulo de passo, largura da pista e rotação dos autopódios. Foram descritos e analisados diversos espécimes de pegadas de maior porte com afinidade a Synapsida, sendo definido um novo icnotáxon, Aracoaraichnium leonardii. Foi possível determinar que o produtor destas pegadas de maior porte pertencia a uma espécie diferente da produtora das pegadas de Brasilichnium, e não um estágio ontogenético avançado. Dessa forma, o produtor de A. leonardii representa um novo componente na estrutura ecológica do paleodeserto Botucatu. É inferido que os produtores deste icnotáxon poderiam se alimentar de invertebrados ou material vegetal, dependendo da disponibilidade dos recursos, sendo potenciais competidores dos produtores de Brasilichnium. Também foram descritas e analisadas pegadas com afinidade a Lepidosauria (lagartos). Tais pegadas são pentadáctilas, com dígitos curvos, sendo o dígito I direcionado para o interior da pista e oposto ao dígito V, que se encontra em uma posição posterolateral. São identificadas marcas atribuídas ao arraste e ao contato da cauda com o substrato. A atribuição icnotaxonômica foi realizada tentativamente ao icnogênero Rhyncosauroides, e futuras análises a partir de novos espécimes com melhor qualidade preservacional podem elucidar essa questão. A partir da análise das pistas foi possível identificar três comportamentos distintos de locomoção, sendo eles o deslocamento cursorial típico, um deslocamento onde as pegadas estão rotacionadas para mesma direção, divergindo da direção da pista, e um onde o produtor faz momentos de parada. O reconhecimento de um novo produtor com afinidade a Lepidosauria aumenta a complexidade da teia ecológica da Formação Botucatu e contribuiu para o entendimento da distribuição e ocupação de nicho destes animais no Cretáceo Inferior.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CAPES: 88882.426401/2019-01porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ecologia e Recursos Naturais - PPGERNUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessIcnofóssilPegadas fósseisTetrapodaDesertoCretáceoTrace fossilFossil tracksDesertCretaceousCIENCIAS BIOLOGICAS::ECOLOGIACIENCIAS BIOLOGICAS::ZOOLOGIACIENCIAS EXATAS E DA TERRA::GEOCIENCIASAnálise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior)Morphological and paleoecological analysis of ichnofossils attributed to non-arcosaurs tetrapods from the Botucatu Formation (Lower Cretaceous)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis6006001b81b0aa-0710-4ade-a818-dc74cd93b771reponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALtese pvb.pdftese pvb.pdfapplication/pdf4563568https://repositorio.ufscar.br/bitstream/ufscar/14229/1/tese%20pvb.pdf9ef83461bc015e3426cea2607d9361e0MD51Carta comprovante.pdfCarta comprovante.pdfapplication/pdf283081https://repositorio.ufscar.br/bitstream/ufscar/14229/2/Carta%20comprovante.pdfe54a7bb222fa06ef1b1371485e640451MD52CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/14229/3/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD53TEXTtese pvb.pdf.txttese pvb.pdf.txtExtracted texttext/plain161678https://repositorio.ufscar.br/bitstream/ufscar/14229/4/tese%20pvb.pdf.txt39681a6e3141c5b3b8dbc0a29705594dMD54Carta comprovante.pdf.txtCarta comprovante.pdf.txtExtracted texttext/plain1573https://repositorio.ufscar.br/bitstream/ufscar/14229/6/Carta%20comprovante.pdf.txte87aea895f50a0267e5f032f65f91e0aMD56THUMBNAILtese pvb.pdf.jpgtese pvb.pdf.jpgIM Thumbnailimage/jpeg6925https://repositorio.ufscar.br/bitstream/ufscar/14229/5/tese%20pvb.pdf.jpg03d5d8687646000b7598638880e0f31bMD55Carta comprovante.pdf.jpgCarta comprovante.pdf.jpgIM Thumbnailimage/jpeg13877https://repositorio.ufscar.br/bitstream/ufscar/14229/7/Carta%20comprovante.pdf.jpga5dfd7d93056d062799d14cbb98794c3MD57ufscar/142292023-09-18 18:32:10.495oai:repositorio.ufscar.br:ufscar/14229Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:32:10Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
dc.title.alternative.eng.fl_str_mv |
Morphological and paleoecological analysis of ichnofossils attributed to non-arcosaurs tetrapods from the Botucatu Formation (Lower Cretaceous) |
title |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
spellingShingle |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) Buck, Pedro Victor Icnofóssil Pegadas fósseis Tetrapoda Deserto Cretáceo Trace fossil Fossil tracks Desert Cretaceous CIENCIAS BIOLOGICAS::ECOLOGIA CIENCIAS BIOLOGICAS::ZOOLOGIA CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS |
title_short |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
title_full |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
title_fullStr |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
title_full_unstemmed |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
title_sort |
Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior) |
author |
Buck, Pedro Victor |
author_facet |
Buck, Pedro Victor |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/2069207952124984 |
dc.contributor.author.fl_str_mv |
Buck, Pedro Victor |
dc.contributor.advisor1.fl_str_mv |
Fernandes, Marcelo Adorna |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/6709493251686592 |
dc.contributor.advisor-co1.fl_str_mv |
Ghilardi, Aline Marcele |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5761534317977568 |
dc.contributor.authorID.fl_str_mv |
cf2accd8-fc89-456b-ac2c-6191efcf4960 |
contributor_str_mv |
Fernandes, Marcelo Adorna Ghilardi, Aline Marcele |
dc.subject.por.fl_str_mv |
Icnofóssil Pegadas fósseis Tetrapoda Deserto Cretáceo |
topic |
Icnofóssil Pegadas fósseis Tetrapoda Deserto Cretáceo Trace fossil Fossil tracks Desert Cretaceous CIENCIAS BIOLOGICAS::ECOLOGIA CIENCIAS BIOLOGICAS::ZOOLOGIA CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS |
dc.subject.eng.fl_str_mv |
Trace fossil Fossil tracks Desert Cretaceous |
dc.subject.cnpq.fl_str_mv |
CIENCIAS BIOLOGICAS::ECOLOGIA CIENCIAS BIOLOGICAS::ZOOLOGIA CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS |
description |
Abstract Ichnofossils, studied by Paleoichnology, are structures produced as a result of behavioral and physiological activities of organisms of the past. Fossil tracks (footprints), one of the best-known types of ichnofossils (bioturbations), are produced by the interaction of the animal's autopods with the substrate, the latter being deformed in the process. The shape of the autopods, the conditions of the substrate and the locomotion behavior of the trackmaker directly influence the morphology of the tracks. During the beginning of the Cretaceous, a huge sandy paleodesert covered a large area of the Brazilian territory, giving rise later to the eolian sandstones of the Botucatu Formation. Its main fossiliferous content are the tracks and excavations produced by the animals (vertebrates and invertebrates) that lived in the paleodesert, being the region of the Municipality of Araraquara (São Paulo State) the one that presents the greatest quantity and diversity of ichnofossils. The present work had as main objective the morphological and paleoecological analysis of ichnofossils with affinity to non-archosaurian tetrapods from the Botucatu Formation. The descriptions of the tracks and trackways were carried out based on parameters established in the scientific literature, such as width and length of the tracks, oblique pace, stride, pace angulation, trackway width and rotation of the autopods. Several specimens of tracks with affinity to larger mammaliaformes have been described and analyzed, and a new ichnotaxon, Aracoaraichnium leonardii, has been defined. It was possible to determine that the trackmaker of these larger tracks belonged to a different species than the trackmaker of the Brasilichnium tracks, and not an advanced ontogenetic stage. In this way, the trackmaker of A. leonardii represents a new component in the ecological structure of the Botucatu paleodesert. It is inferred that the trackmakers of this ichnotaxon could feed on invertebrates or plant material, depending on the availability of resources, being potential competitors of the trackmakers of Brasilichnium. Tracks with affinity to Lepidosauria (lizards) were also described and analyzed for the first time. Such tracks are pentadactyl, with curved digits. The digit I is directed to the inside of the trackway and opposite the digit V, which is in a posterolateral position. Marks attributed to drag and contact of the tail on the substrate were identified. The icnotaxonomic attribution was tentatively made to the icnogenus Rhyncosauroides, and future analyzes based on new, better preserved specimens may elucidate this issue. From the analysis of the trackways, it was possible to identify three distinct locomotion behaviors, being the typical cursorial gait, a gait where the footprints are rotated in the same direction, diverging from the trackway’s midline, and one where the producer makes stops. The recognition of a new trackmaker with a lizard-like affinity increases the complexity of the ecological web of the Botucatu Formation and contributed to the understanding of the distribution and niche occupation of these animals in the Lower Cretaceous. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-05-05T11:26:14Z |
dc.date.available.fl_str_mv |
2021-05-05T11:26:14Z |
dc.date.issued.fl_str_mv |
2021-03-12 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
BUCK, Pedro Victor. Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior). 2021. Tese (Doutorado em Ecologia e Recursos Naturais) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14229. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/14229 |
identifier_str_mv |
BUCK, Pedro Victor. Análise morfológica e paleoecológica de icnofósseis atribuídos a tetrápodes não-arcossauros da Formação Botucatu (Cretáceo Inferior). 2021. Tese (Doutorado em Ecologia e Recursos Naturais) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/14229. |
url |
https://repositorio.ufscar.br/handle/ufscar/14229 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.confidence.fl_str_mv |
600 600 |
dc.relation.authority.fl_str_mv |
1b81b0aa-0710-4ade-a818-dc74cd93b771 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ecologia e Recursos Naturais - PPGERN |
dc.publisher.initials.fl_str_mv |
UFSCar |
publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFSCAR instname:Universidade Federal de São Carlos (UFSCAR) instacron:UFSCAR |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
UFSCAR |
institution |
UFSCAR |
reponame_str |
Repositório Institucional da UFSCAR |
collection |
Repositório Institucional da UFSCAR |
bitstream.url.fl_str_mv |
https://repositorio.ufscar.br/bitstream/ufscar/14229/1/tese%20pvb.pdf https://repositorio.ufscar.br/bitstream/ufscar/14229/2/Carta%20comprovante.pdf https://repositorio.ufscar.br/bitstream/ufscar/14229/3/license_rdf https://repositorio.ufscar.br/bitstream/ufscar/14229/4/tese%20pvb.pdf.txt https://repositorio.ufscar.br/bitstream/ufscar/14229/6/Carta%20comprovante.pdf.txt https://repositorio.ufscar.br/bitstream/ufscar/14229/5/tese%20pvb.pdf.jpg https://repositorio.ufscar.br/bitstream/ufscar/14229/7/Carta%20comprovante.pdf.jpg |
bitstream.checksum.fl_str_mv |
9ef83461bc015e3426cea2607d9361e0 e54a7bb222fa06ef1b1371485e640451 e39d27027a6cc9cb039ad269a5db8e34 39681a6e3141c5b3b8dbc0a29705594d e87aea895f50a0267e5f032f65f91e0a 03d5d8687646000b7598638880e0f31b a5dfd7d93056d062799d14cbb98794c3 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
|
_version_ |
1802136389826904064 |