A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities

Detalhes bibliográficos
Autor(a) principal: Fachini, Thiago S.
Data de Publicação: 2022
Outros Autores: Godoy, Pedro L., Marsola, Júlio C. A. [UNESP], Montefeltro, Felipe C. [UNESP], Langer, Max C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1080/08912963.2022.2122822
http://hdl.handle.net/11449/245999
Resumo: Most crocodyliforms of the Bauru Group were found in rocks of the Adamantina Formation, whereas the younger Marília Formation is almost devoid of such fossils. Here, we provide a detailed comparative description of MPMA 02–0005/87, a large skull roof found in Marília Formation deposits of the Monte Alto area, assigning it to a new crocodyliform. Despite its fragmentary nature and puzzling suit of characters, the new taxon possesses enough characters to reject its placement within Notosuchia, which is so far the only crocodyliform clade known from the Bauru Group. We tested its phylogenetic position with twodata matrices, both of which recovered the new taxon within Neosuchia and Eusuchia. Although the material does not preserve any eusuchian synapomorphy, a neosuchian affinity is supported by: anterior extension of the meatal chamber covered by the squamosal; constricted flange of the posterior process of the postorbital; poorly developed posterolateral process of squamosal. Finally, the large size estimated for the specimen, ranging from 2.98 to 5.88 metres, coupled with its possible neosuchian affinity, suggests a possible semiaquatic behaviour, an ecology rarely explored by the predominantly terrestrial crocodyliforms of the Bauru Group. http://www.zoobank.org/urn:lsid:zoobank.org:pub:3C7C9499-FFE3-4D5A-A90B-DE2E3572EF16 http://www.zoobank.org/urn:lsid:zoobank.org:pub:98FFC142-674F-464D-BCFD-721C608A2635.
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spelling A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinitiesBauru GroupCrocodyliformesEusuchiaMarília FormationNeosuchiaNotosuchiaMost crocodyliforms of the Bauru Group were found in rocks of the Adamantina Formation, whereas the younger Marília Formation is almost devoid of such fossils. Here, we provide a detailed comparative description of MPMA 02–0005/87, a large skull roof found in Marília Formation deposits of the Monte Alto area, assigning it to a new crocodyliform. Despite its fragmentary nature and puzzling suit of characters, the new taxon possesses enough characters to reject its placement within Notosuchia, which is so far the only crocodyliform clade known from the Bauru Group. We tested its phylogenetic position with twodata matrices, both of which recovered the new taxon within Neosuchia and Eusuchia. Although the material does not preserve any eusuchian synapomorphy, a neosuchian affinity is supported by: anterior extension of the meatal chamber covered by the squamosal; constricted flange of the posterior process of the postorbital; poorly developed posterolateral process of squamosal. Finally, the large size estimated for the specimen, ranging from 2.98 to 5.88 metres, coupled with its possible neosuchian affinity, suggests a possible semiaquatic behaviour, an ecology rarely explored by the predominantly terrestrial crocodyliforms of the Bauru Group. http://www.zoobank.org/urn:lsid:zoobank.org:pub:3C7C9499-FFE3-4D5A-A90B-DE2E3572EF16 http://www.zoobank.org/urn:lsid:zoobank.org:pub:98FFC142-674F-464D-BCFD-721C608A2635.Laboratório de Paleontologia de Ribeirão Preto FFCLRP Universidade de São PauloDepartment of Anatomical Sciences Stony Brook UniversityDepartamento de Zoologia Universidade Federal do ParanáUniversidade Tecnológica Federal do Paraná campus Dois VizinhosLaboratório de Paleontologia e Evolução de Ilha Solteira Universidade Estadual Paulista “Júlio de Mesquita Filho”Laboratório de Paleontologia e Evolução de Ilha Solteira Universidade Estadual Paulista “Júlio de Mesquita Filho”Universidade de São Paulo (USP)Stony Brook UniversityUniversidade Federal do Paraná (UFPR)Universidade Tecnológica Federal do ParanáUniversidade Estadual Paulista (UNESP)Fachini, Thiago S.Godoy, Pedro L.Marsola, Júlio C. A. [UNESP]Montefeltro, Felipe C. [UNESP]Langer, Max C.2023-07-29T12:29:04Z2023-07-29T12:29:04Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/08912963.2022.2122822Historical Biology.1029-23810891-2963http://hdl.handle.net/11449/24599910.1080/08912963.2022.21228222-s2.0-85139154878Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengHistorical Biologyinfo:eu-repo/semantics/openAccess2023-07-29T12:29:04Zoai:repositorio.unesp.br:11449/245999Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:37:54.239810Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
title A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
spellingShingle A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
Fachini, Thiago S.
Bauru Group
Crocodyliformes
Eusuchia
Marília Formation
Neosuchia
Notosuchia
title_short A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
title_full A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
title_fullStr A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
title_full_unstemmed A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
title_sort A large-sized mesoeucrocodylian from the Late Cretaceous of Brazil with possible neosuchian affinities
author Fachini, Thiago S.
author_facet Fachini, Thiago S.
Godoy, Pedro L.
Marsola, Júlio C. A. [UNESP]
Montefeltro, Felipe C. [UNESP]
Langer, Max C.
author_role author
author2 Godoy, Pedro L.
Marsola, Júlio C. A. [UNESP]
Montefeltro, Felipe C. [UNESP]
Langer, Max C.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Stony Brook University
Universidade Federal do Paraná (UFPR)
Universidade Tecnológica Federal do Paraná
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Fachini, Thiago S.
Godoy, Pedro L.
Marsola, Júlio C. A. [UNESP]
Montefeltro, Felipe C. [UNESP]
Langer, Max C.
dc.subject.por.fl_str_mv Bauru Group
Crocodyliformes
Eusuchia
Marília Formation
Neosuchia
Notosuchia
topic Bauru Group
Crocodyliformes
Eusuchia
Marília Formation
Neosuchia
Notosuchia
description Most crocodyliforms of the Bauru Group were found in rocks of the Adamantina Formation, whereas the younger Marília Formation is almost devoid of such fossils. Here, we provide a detailed comparative description of MPMA 02–0005/87, a large skull roof found in Marília Formation deposits of the Monte Alto area, assigning it to a new crocodyliform. Despite its fragmentary nature and puzzling suit of characters, the new taxon possesses enough characters to reject its placement within Notosuchia, which is so far the only crocodyliform clade known from the Bauru Group. We tested its phylogenetic position with twodata matrices, both of which recovered the new taxon within Neosuchia and Eusuchia. Although the material does not preserve any eusuchian synapomorphy, a neosuchian affinity is supported by: anterior extension of the meatal chamber covered by the squamosal; constricted flange of the posterior process of the postorbital; poorly developed posterolateral process of squamosal. Finally, the large size estimated for the specimen, ranging from 2.98 to 5.88 metres, coupled with its possible neosuchian affinity, suggests a possible semiaquatic behaviour, an ecology rarely explored by the predominantly terrestrial crocodyliforms of the Bauru Group. http://www.zoobank.org/urn:lsid:zoobank.org:pub:3C7C9499-FFE3-4D5A-A90B-DE2E3572EF16 http://www.zoobank.org/urn:lsid:zoobank.org:pub:98FFC142-674F-464D-BCFD-721C608A2635.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
2023-07-29T12:29:04Z
2023-07-29T12:29:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1080/08912963.2022.2122822
Historical Biology.
1029-2381
0891-2963
http://hdl.handle.net/11449/245999
10.1080/08912963.2022.2122822
2-s2.0-85139154878
url http://dx.doi.org/10.1080/08912963.2022.2122822
http://hdl.handle.net/11449/245999
identifier_str_mv Historical Biology.
1029-2381
0891-2963
10.1080/08912963.2022.2122822
2-s2.0-85139154878
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Historical Biology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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