Postcranial anatomy of Pissarrachampsa sera (Crocodyliformes, Baurusuchidae) from the Late Cretaceous of Brazil: Insights on lifestyle and phylogenetic significance
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
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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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 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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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1808128493760806912 |