Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance

Detalhes bibliográficos
Autor(a) principal: Godoy, Pedro L.
Data de Publicação: 2016
Outros Autores: Bronzati, Mario, Eltink, Estevan, Marsola, J�lio C. De A., Cidade, Giovanne M., Langer, Max C., Montefeltro, Felipe C. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.7717/peerj.2075
http://hdl.handle.net/11449/168701
Resumo: The postcranial anatomy of Crocodyliformes has historically been neglected, as most descriptions are based solely on skulls. Yet, the significance of the postcranium in crocodyliforms evolution is reflected in the great lifestyle diversity exhibited by the group, with members ranging from terrestrial animals to semi-aquatic and fully marine forms. Recently, studies have emphasized the importance of the postcranium. Following this trend, here we present a detailed description of the postcranial elements of Pissarrachampsa sera (Mesoeucrocodylia, Baurusuchidae), from the Adamantina Formation (Bauru Group, Late Cretaceous of Brazil). The preserved elements include dorsal vertebrae, partial forelimb, pelvic girdle, and hindlimbs. Comparisons with the postcranial anatomy of baurusuchids and other crocodyliforms, together with body-size and mass estimates, lead to a better understanding of the paleobiology of Pissarrachampsa sera, including its terrestrial lifestyle and its role as a top predator. Furthermore, the complete absence of osteoderms in P. sera, a condition previously known only in marine crocodyliforms, suggests osteoderms very likely played a minor role in locomotion of baurusuchids, unlike other groups of terrestrial crocodyliforms. Finally, a phylogenetic analysis including the newly recognized postcranial features was carried out, and exploratory analyses were performed to investigate the influence of both cranial and postcranial characters in the phylogeny of Crocodyliformes. Our results suggest that crocodyliform relationships are mainly determined by cranial characters. However, this seems to be a consequence of the great number of missing entries in the data set with only postcranial characters and not of the lack of potential (or synapomorphies) for this kind of data to reflect the evolutionary history of Crocodyliformes.
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spelling Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significanceAdamantina formationBauru groupBaurusuchidaeEcological habitFossilMesoeucrocodyliaNotosuchiaOsteodermsPaleontologyPhylogenetic biasThe postcranial anatomy of Crocodyliformes has historically been neglected, as most descriptions are based solely on skulls. Yet, the significance of the postcranium in crocodyliforms evolution is reflected in the great lifestyle diversity exhibited by the group, with members ranging from terrestrial animals to semi-aquatic and fully marine forms. Recently, studies have emphasized the importance of the postcranium. Following this trend, here we present a detailed description of the postcranial elements of Pissarrachampsa sera (Mesoeucrocodylia, Baurusuchidae), from the Adamantina Formation (Bauru Group, Late Cretaceous of Brazil). The preserved elements include dorsal vertebrae, partial forelimb, pelvic girdle, and hindlimbs. Comparisons with the postcranial anatomy of baurusuchids and other crocodyliforms, together with body-size and mass estimates, lead to a better understanding of the paleobiology of Pissarrachampsa sera, including its terrestrial lifestyle and its role as a top predator. Furthermore, the complete absence of osteoderms in P. sera, a condition previously known only in marine crocodyliforms, suggests osteoderms very likely played a minor role in locomotion of baurusuchids, unlike other groups of terrestrial crocodyliforms. Finally, a phylogenetic analysis including the newly recognized postcranial features was carried out, and exploratory analyses were performed to investigate the influence of both cranial and postcranial characters in the phylogeny of Crocodyliformes. Our results suggest that crocodyliform relationships are mainly determined by cranial characters. However, this seems to be a consequence of the great number of missing entries in the data set with only postcranial characters and not of the lack of potential (or synapomorphies) for this kind of data to reflect the evolutionary history of Crocodyliformes.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)School of Geography Earth and Environmental Sciences University of BirminghamBayerische Staatssammlung f�r Pal�ontologie und Geologie Staatlichen Naturwissenschaftlichen Sammlungen BayernsDepartment of Earth and Environmental Sciences Palaeontology and Geobiology Ludwig-Maximilians-Universit�t M�nchenLaborat�rio de Paleontologia de Ribeir�o Preto FFCLRP Universidade de S�o PauloDepartamento de Biologia e Zootecnia Universidade Estadual Paulista (UNESP)Departamento de Biologia e Zootecnia Universidade Estadual Paulista (UNESP)CAPES: 1275/10-0FAPESP: 2008/57642-6FAPESP: 2009/54656-9FAPESP: 2013/04516-1FAPESP: 2013/06811-0FAPESP: 2013/23114-1FAPESP: 2014/03825-3CNPq: 246610/2012-3University of BirminghamStaatlichen Naturwissenschaftlichen Sammlungen BayernsLudwig-Maximilians-Universit�t M�nchenUniversidade de S�o PauloUniversidade Estadual Paulista (Unesp)Godoy, Pedro L.Bronzati, MarioEltink, EstevanMarsola, J�lio C. De A.Cidade, Giovanne M.Langer, Max C.Montefeltro, Felipe C. [UNESP]2018-12-11T16:42:37Z2018-12-11T16:42:37Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.7717/peerj.2075PeerJ, v. 2016, n. 5, 2016.2167-8359http://hdl.handle.net/11449/16870110.7717/peerj.20752-s2.0-849715588532-s2.0-84971558853.pdf93133328271517140000-0001-6519-8546Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPeerJ1,087info:eu-repo/semantics/openAccess2023-10-19T06:03:24Zoai:repositorio.unesp.br:11449/168701Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:17:13.696861Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
title Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
spellingShingle Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
Godoy, Pedro L.
Adamantina formation
Bauru group
Baurusuchidae
Ecological habit
Fossil
Mesoeucrocodylia
Notosuchia
Osteoderms
Paleontology
Phylogenetic bias
title_short Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
title_full Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
title_fullStr Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
title_full_unstemmed Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
title_sort Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
author Godoy, Pedro L.
author_facet Godoy, Pedro L.
Bronzati, Mario
Eltink, Estevan
Marsola, J�lio C. De A.
Cidade, Giovanne M.
Langer, Max C.
Montefeltro, Felipe C. [UNESP]
author_role author
author2 Bronzati, Mario
Eltink, Estevan
Marsola, J�lio C. De A.
Cidade, Giovanne M.
Langer, Max C.
Montefeltro, Felipe C. [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv University of Birmingham
Staatlichen Naturwissenschaftlichen Sammlungen Bayerns
Ludwig-Maximilians-Universit�t M�nchen
Universidade de S�o Paulo
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Godoy, Pedro L.
Bronzati, Mario
Eltink, Estevan
Marsola, J�lio C. De A.
Cidade, Giovanne M.
Langer, Max C.
Montefeltro, Felipe C. [UNESP]
dc.subject.por.fl_str_mv Adamantina formation
Bauru group
Baurusuchidae
Ecological habit
Fossil
Mesoeucrocodylia
Notosuchia
Osteoderms
Paleontology
Phylogenetic bias
topic Adamantina formation
Bauru group
Baurusuchidae
Ecological habit
Fossil
Mesoeucrocodylia
Notosuchia
Osteoderms
Paleontology
Phylogenetic bias
description The postcranial anatomy of Crocodyliformes has historically been neglected, as most descriptions are based solely on skulls. Yet, the significance of the postcranium in crocodyliforms evolution is reflected in the great lifestyle diversity exhibited by the group, with members ranging from terrestrial animals to semi-aquatic and fully marine forms. Recently, studies have emphasized the importance of the postcranium. Following this trend, here we present a detailed description of the postcranial elements of Pissarrachampsa sera (Mesoeucrocodylia, Baurusuchidae), from the Adamantina Formation (Bauru Group, Late Cretaceous of Brazil). The preserved elements include dorsal vertebrae, partial forelimb, pelvic girdle, and hindlimbs. Comparisons with the postcranial anatomy of baurusuchids and other crocodyliforms, together with body-size and mass estimates, lead to a better understanding of the paleobiology of Pissarrachampsa sera, including its terrestrial lifestyle and its role as a top predator. Furthermore, the complete absence of osteoderms in P. sera, a condition previously known only in marine crocodyliforms, suggests osteoderms very likely played a minor role in locomotion of baurusuchids, unlike other groups of terrestrial crocodyliforms. Finally, a phylogenetic analysis including the newly recognized postcranial features was carried out, and exploratory analyses were performed to investigate the influence of both cranial and postcranial characters in the phylogeny of Crocodyliformes. Our results suggest that crocodyliform relationships are mainly determined by cranial characters. However, this seems to be a consequence of the great number of missing entries in the data set with only postcranial characters and not of the lack of potential (or synapomorphies) for this kind of data to reflect the evolutionary history of Crocodyliformes.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-01
2018-12-11T16:42:37Z
2018-12-11T16:42:37Z
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/10.7717/peerj.2075
PeerJ, v. 2016, n. 5, 2016.
2167-8359
http://hdl.handle.net/11449/168701
10.7717/peerj.2075
2-s2.0-84971558853
2-s2.0-84971558853.pdf
9313332827151714
0000-0001-6519-8546
url http://dx.doi.org/10.7717/peerj.2075
http://hdl.handle.net/11449/168701
identifier_str_mv PeerJ, v. 2016, n. 5, 2016.
2167-8359
10.7717/peerj.2075
2-s2.0-84971558853
2-s2.0-84971558853.pdf
9313332827151714
0000-0001-6519-8546
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv PeerJ
1,087
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dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
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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)
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