A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications

Autores
Marsicano, Claudia Alicia; Barredo, Silvia
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new Triassic tetrapod track assemblage recorded from levels of the Cuyana Basin (west-central Argentina) is described. The tracks came from multiple track-bearing horizons of the Upper Triassic (Carnian) Portezuelo Formation that indicate recurrent playa to mudflat conditions in a marginal lacustrine succession. This footprint assemblage is the most important one described up to now for the lower Mesozoic of South America, and forms a significant estimate of the fauna represented during that time in the region. Therefore, in order to understand the faunal significance of the assemblage, the track-makers were identified within a phylogenetic context. Although at a coarse taxonomic level, this analysis indicates the presence of non-mammalian therapsids (small cynodonts and large dicynodonts) and a quite diverse archosaur fauna that includes members of both crurotarsal archosaurs and dinosaurs (sauropodomorphs and theropods). Comparisons between the studied assemblage and other Early Mesozoic tetrapod track records from Gondwana suggest close relationships with those described from the Upper Triassic of the Karoo Basin in South Africa. In addition, the presence of putative basal sauropodomorph dinosaur tracks in the Portezuelo levels suggests that the stratigraphic range of the group extends back into the Carnian, farther than that documented by the known body-fossil record of the group in western Gondwana.
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Barredo, Silvia P.. Universidad de Buenos Aires; Argentina
Materia
LATE TRIASSIC
PALAEOBIOGEOGRAPHY
PHYLOGENY
TETRAPOD FOOTPRINTS
WEST-CENTRAL ARGENTINA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/92936
Acceder
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spelling A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implicationsMarsicano, Claudia AliciaBarredo, SilviaLATE TRIASSICPALAEOBIOGEOGRAPHYPHYLOGENYTETRAPOD FOOTPRINTSWEST-CENTRAL ARGENTINAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A new Triassic tetrapod track assemblage recorded from levels of the Cuyana Basin (west-central Argentina) is described. The tracks came from multiple track-bearing horizons of the Upper Triassic (Carnian) Portezuelo Formation that indicate recurrent playa to mudflat conditions in a marginal lacustrine succession. This footprint assemblage is the most important one described up to now for the lower Mesozoic of South America, and forms a significant estimate of the fauna represented during that time in the region. Therefore, in order to understand the faunal significance of the assemblage, the track-makers were identified within a phylogenetic context. Although at a coarse taxonomic level, this analysis indicates the presence of non-mammalian therapsids (small cynodonts and large dicynodonts) and a quite diverse archosaur fauna that includes members of both crurotarsal archosaurs and dinosaurs (sauropodomorphs and theropods). Comparisons between the studied assemblage and other Early Mesozoic tetrapod track records from Gondwana suggest close relationships with those described from the Upper Triassic of the Karoo Basin in South Africa. In addition, the presence of putative basal sauropodomorph dinosaur tracks in the Portezuelo levels suggests that the stratigraphic range of the group extends back into the Carnian, farther than that documented by the known body-fossil record of the group in western Gondwana.Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Barredo, Silvia P.. Universidad de Buenos Aires; ArgentinaElsevier Science2004-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92936Marsicano, Claudia Alicia; Barredo, Silvia; A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 203; 3-4; 1-2004; 313-3350031-0182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0031-0182(03)00689-8info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018203006898info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:21Zoai:ri.conicet.gov.ar:11336/92936instacron: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:34982025-10-15 14:27:21.957CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
title A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
spellingShingle A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
Marsicano, Claudia Alicia
LATE TRIASSIC
PALAEOBIOGEOGRAPHY
PHYLOGENY
TETRAPOD FOOTPRINTS
WEST-CENTRAL ARGENTINA
title_short A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
title_full A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
title_fullStr A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
title_full_unstemmed A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
title_sort A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications
dc.creator.none.fl_str_mv Marsicano, Claudia Alicia
Barredo, Silvia
author Marsicano, Claudia Alicia
author_facet Marsicano, Claudia Alicia
Barredo, Silvia
author_role author
author2 Barredo, Silvia
author2_role author
dc.subject.none.fl_str_mv LATE TRIASSIC
PALAEOBIOGEOGRAPHY
PHYLOGENY
TETRAPOD FOOTPRINTS
WEST-CENTRAL ARGENTINA
topic LATE TRIASSIC
PALAEOBIOGEOGRAPHY
PHYLOGENY
TETRAPOD FOOTPRINTS
WEST-CENTRAL ARGENTINA
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 Triassic tetrapod track assemblage recorded from levels of the Cuyana Basin (west-central Argentina) is described. The tracks came from multiple track-bearing horizons of the Upper Triassic (Carnian) Portezuelo Formation that indicate recurrent playa to mudflat conditions in a marginal lacustrine succession. This footprint assemblage is the most important one described up to now for the lower Mesozoic of South America, and forms a significant estimate of the fauna represented during that time in the region. Therefore, in order to understand the faunal significance of the assemblage, the track-makers were identified within a phylogenetic context. Although at a coarse taxonomic level, this analysis indicates the presence of non-mammalian therapsids (small cynodonts and large dicynodonts) and a quite diverse archosaur fauna that includes members of both crurotarsal archosaurs and dinosaurs (sauropodomorphs and theropods). Comparisons between the studied assemblage and other Early Mesozoic tetrapod track records from Gondwana suggest close relationships with those described from the Upper Triassic of the Karoo Basin in South Africa. In addition, the presence of putative basal sauropodomorph dinosaur tracks in the Portezuelo levels suggests that the stratigraphic range of the group extends back into the Carnian, farther than that documented by the known body-fossil record of the group in western Gondwana.
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Barredo, Silvia P.. Universidad de Buenos Aires; Argentina
description A new Triassic tetrapod track assemblage recorded from levels of the Cuyana Basin (west-central Argentina) is described. The tracks came from multiple track-bearing horizons of the Upper Triassic (Carnian) Portezuelo Formation that indicate recurrent playa to mudflat conditions in a marginal lacustrine succession. This footprint assemblage is the most important one described up to now for the lower Mesozoic of South America, and forms a significant estimate of the fauna represented during that time in the region. Therefore, in order to understand the faunal significance of the assemblage, the track-makers were identified within a phylogenetic context. Although at a coarse taxonomic level, this analysis indicates the presence of non-mammalian therapsids (small cynodonts and large dicynodonts) and a quite diverse archosaur fauna that includes members of both crurotarsal archosaurs and dinosaurs (sauropodomorphs and theropods). Comparisons between the studied assemblage and other Early Mesozoic tetrapod track records from Gondwana suggest close relationships with those described from the Upper Triassic of the Karoo Basin in South Africa. In addition, the presence of putative basal sauropodomorph dinosaur tracks in the Portezuelo levels suggests that the stratigraphic range of the group extends back into the Carnian, farther than that documented by the known body-fossil record of the group in western Gondwana.
publishDate 2004
dc.date.none.fl_str_mv 2004-01
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/11336/92936
Marsicano, Claudia Alicia; Barredo, Silvia; A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 203; 3-4; 1-2004; 313-335
0031-0182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/92936
identifier_str_mv Marsicano, Claudia Alicia; Barredo, Silvia; A Triassic tetrapod footprint assemblage from southern South America: Palaeobiogeographical and evolutionary implications; Elsevier Science; Palaeogeography, Palaeoclimatology, Palaeoecology; 203; 3-4; 1-2004; 313-335
0031-0182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/S0031-0182(03)00689-8
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0031018203006898
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
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
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score 13.22299

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