A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina
- Autores
- Pol, Diego; Powell, Jaime Eduardo
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A new basal mesoeucrocodylian, Lorosuchus nodosusgen. et sp. nov., from the Palaeocene of north-western Argentina is presented here. The new taxon is diagnosed by the presence of external nares facing dorsally, completely septated, and retracted posteriorly, elevated narial rim, sagittal crest on the anteromedial margins of both premaxillae, dorsal crests and protuberances on the anterior half of the rostrum, and anterior-most three maxillary teeth with emarginated alveolar margins. This taxon is most parsimoniously interpreted as a bizarre and highly autapomorphic basal member of Sebecidae, a position supported (amongst other characters) by the elongated bar-like pterygoid flanges, a laterally opened notch and fossa in the pterygoids located posterolaterally to the choanal opening (parachoanal fossa), base of postorbital process of jugal directed dorsally, and palatal parts of the premaxillae meeting posteriorly to the incisive foramen. Lorosuchus nodosus also shares with basal neosuchians a suite of derived characters that are interpreted as convergently acquired and possibly related to their semiaquatic lifestyle. The phylogenetic analysis used for testing the phylogenetic affinities of L. nodosus depicts Sebecidae as the sister group of Baurusuchidae, forming a monophyletic Sebecosuchia that is deeply nested within Notosuchia. Alternative phylogenetic placements of Sebecidae, such as the recently proposed affinities with peirosaurids, were also evaluated within the context of the present data matrix and found to be only marginally suboptimal. © 2011 The Linnean Society of London.
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Powell, Jaime Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina - Materia
-
CROCODYLIFORMES
MESOEUCROCODYLIA
PHYLOGENY
SEBECIDAE
SEBECOSUCHIA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/69518
Ver los metadatos del registro completo
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network_name_str |
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spelling |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western ArgentinaPol, DiegoPowell, Jaime EduardoCROCODYLIFORMESMESOEUCROCODYLIAPHYLOGENYSEBECIDAESEBECOSUCHIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A new basal mesoeucrocodylian, Lorosuchus nodosusgen. et sp. nov., from the Palaeocene of north-western Argentina is presented here. The new taxon is diagnosed by the presence of external nares facing dorsally, completely septated, and retracted posteriorly, elevated narial rim, sagittal crest on the anteromedial margins of both premaxillae, dorsal crests and protuberances on the anterior half of the rostrum, and anterior-most three maxillary teeth with emarginated alveolar margins. This taxon is most parsimoniously interpreted as a bizarre and highly autapomorphic basal member of Sebecidae, a position supported (amongst other characters) by the elongated bar-like pterygoid flanges, a laterally opened notch and fossa in the pterygoids located posterolaterally to the choanal opening (parachoanal fossa), base of postorbital process of jugal directed dorsally, and palatal parts of the premaxillae meeting posteriorly to the incisive foramen. Lorosuchus nodosus also shares with basal neosuchians a suite of derived characters that are interpreted as convergently acquired and possibly related to their semiaquatic lifestyle. The phylogenetic analysis used for testing the phylogenetic affinities of L. nodosus depicts Sebecidae as the sister group of Baurusuchidae, forming a monophyletic Sebecosuchia that is deeply nested within Notosuchia. Alternative phylogenetic placements of Sebecidae, such as the recently proposed affinities with peirosaurids, were also evaluated within the context of the present data matrix and found to be only marginally suboptimal. © 2011 The Linnean Society of London.Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Powell, Jaime Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; ArgentinaWiley Blackwell Publishing, Inc2011-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69518Pol, Diego; Powell, Jaime Eduardo; A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 163; SUPPL. 1; 12-2011; S7–S360024-4082CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1096-3642.2011.00714.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/zoolinnean/article/163/suppl_1/S7/2627090info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:20Zoai:ri.conicet.gov.ar:11336/69518instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:55:20.458CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
title |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
spellingShingle |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina Pol, Diego CROCODYLIFORMES MESOEUCROCODYLIA PHYLOGENY SEBECIDAE SEBECOSUCHIA |
title_short |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
title_full |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
title_fullStr |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
title_full_unstemmed |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
title_sort |
A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina |
dc.creator.none.fl_str_mv |
Pol, Diego Powell, Jaime Eduardo |
author |
Pol, Diego |
author_facet |
Pol, Diego Powell, Jaime Eduardo |
author_role |
author |
author2 |
Powell, Jaime Eduardo |
author2_role |
author |
dc.subject.none.fl_str_mv |
CROCODYLIFORMES MESOEUCROCODYLIA PHYLOGENY SEBECIDAE SEBECOSUCHIA |
topic |
CROCODYLIFORMES MESOEUCROCODYLIA PHYLOGENY SEBECIDAE SEBECOSUCHIA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
A new basal mesoeucrocodylian, Lorosuchus nodosusgen. et sp. nov., from the Palaeocene of north-western Argentina is presented here. The new taxon is diagnosed by the presence of external nares facing dorsally, completely septated, and retracted posteriorly, elevated narial rim, sagittal crest on the anteromedial margins of both premaxillae, dorsal crests and protuberances on the anterior half of the rostrum, and anterior-most three maxillary teeth with emarginated alveolar margins. This taxon is most parsimoniously interpreted as a bizarre and highly autapomorphic basal member of Sebecidae, a position supported (amongst other characters) by the elongated bar-like pterygoid flanges, a laterally opened notch and fossa in the pterygoids located posterolaterally to the choanal opening (parachoanal fossa), base of postorbital process of jugal directed dorsally, and palatal parts of the premaxillae meeting posteriorly to the incisive foramen. Lorosuchus nodosus also shares with basal neosuchians a suite of derived characters that are interpreted as convergently acquired and possibly related to their semiaquatic lifestyle. The phylogenetic analysis used for testing the phylogenetic affinities of L. nodosus depicts Sebecidae as the sister group of Baurusuchidae, forming a monophyletic Sebecosuchia that is deeply nested within Notosuchia. Alternative phylogenetic placements of Sebecidae, such as the recently proposed affinities with peirosaurids, were also evaluated within the context of the present data matrix and found to be only marginally suboptimal. © 2011 The Linnean Society of London. Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina Fil: Powell, Jaime Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina |
description |
A new basal mesoeucrocodylian, Lorosuchus nodosusgen. et sp. nov., from the Palaeocene of north-western Argentina is presented here. The new taxon is diagnosed by the presence of external nares facing dorsally, completely septated, and retracted posteriorly, elevated narial rim, sagittal crest on the anteromedial margins of both premaxillae, dorsal crests and protuberances on the anterior half of the rostrum, and anterior-most three maxillary teeth with emarginated alveolar margins. This taxon is most parsimoniously interpreted as a bizarre and highly autapomorphic basal member of Sebecidae, a position supported (amongst other characters) by the elongated bar-like pterygoid flanges, a laterally opened notch and fossa in the pterygoids located posterolaterally to the choanal opening (parachoanal fossa), base of postorbital process of jugal directed dorsally, and palatal parts of the premaxillae meeting posteriorly to the incisive foramen. Lorosuchus nodosus also shares with basal neosuchians a suite of derived characters that are interpreted as convergently acquired and possibly related to their semiaquatic lifestyle. The phylogenetic analysis used for testing the phylogenetic affinities of L. nodosus depicts Sebecidae as the sister group of Baurusuchidae, forming a monophyletic Sebecosuchia that is deeply nested within Notosuchia. Alternative phylogenetic placements of Sebecidae, such as the recently proposed affinities with peirosaurids, were also evaluated within the context of the present data matrix and found to be only marginally suboptimal. © 2011 The Linnean Society of London. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/69518 Pol, Diego; Powell, Jaime Eduardo; A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 163; SUPPL. 1; 12-2011; S7–S36 0024-4082 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/69518 |
identifier_str_mv |
Pol, Diego; Powell, Jaime Eduardo; A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 163; SUPPL. 1; 12-2011; S7–S36 0024-4082 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1096-3642.2011.00714.x info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/zoolinnean/article/163/suppl_1/S7/2627090 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844613668679974912 |
score |
13.070432 |