A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil

Autores
Langer, Max C.; de Oliveira Martins, Neurides; Manzig, Paulo César; de Souza Ferreira, Gabriel; de Almeida Marsola, Júlio César; da Silva Vidal, Luciano; Lima, Rosana; Frediani Sant'ana, Lucas Cesar; da Silva Lorençato, Rosangela Honório; Ezcurra, Martin Daniel
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Noasaurines form an enigmatic group of small theropod dinosaurs known from the Late Cretaceous of Gondwana. They are relatively rare, with notable records only in Argentina and Madagascar, and more incomplete remains reported for Brazil, India, and continental Africa. In south-central Brazil, the Bauru Basin has yielded a rich fauna of terrestrial tetrapods, most of which is known from the fluvial deposits of the Bauru Group. The mainly aeolian deposits of the Caiuá Group, on the contrary, bear a scarce fossil record composed of rare lizards, turtles, and pterosaurs. We report here the first dinosaur of the Caiuá Group, which also represents the best-preserved theropod so far recovered from the entire Bauru Basin. The identified skeletal parts (vertebrae, girdles, limbs, and scarce cranial elements) show that the new taxon was just over 1 m long, with unique anatomical traits among theropods. Metatarsals II and IV have very lateromedially compressed shafts, as are the blade-like ungual phalanges of the respective digits. This implies that the new dinosaur could have been functionally monodactyl, with a main central weight-bearing digit, flanked by neighboring elements positioned very close to digit III or even held free of the ground. Such anatomical adaptation is formerly unrecorded among archosaurs, but was previously inferred from footprints discovered during the 1970s in the same beds that yielded the new dinosaur. A phylogenetic analysis nests the new taxon within Noasaurinae, which is unresolved because of the multiple alternative positions that Noasaurus leali can take. The exclusion of that taxon results in positioning the new dinosaur as the sister-taxon of the Argentinean Velocisaurus unicus.
Fil: Langer, Max C.. Universidade de Sao Paulo; Brasil
Fil: de Oliveira Martins, Neurides. Universidade de Sao Paulo; Brasil
Fil: Manzig, Paulo César. Universidade de Sao Paulo; Brasil
Fil: de Souza Ferreira, Gabriel. Universidade de Sao Paulo; Brasil
Fil: de Almeida Marsola, Júlio César. Universidade de Sao Paulo; Brasil
Fil: da Silva Vidal, Luciano. Universidade de Sao Paulo; Brasil
Fil: Lima, Rosana. Universidade de Sao Paulo; Brasil
Fil: Frediani Sant'ana, Lucas Cesar. Universidade de Sao Paulo; Brasil
Fil: da Silva Lorençato, Rosangela Honório. Universidade de Sao Paulo; Brasil
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
79th Annual Meeting of Society of Vertebrate Paleontology
Brisbane
Australia
Society of Vertebrate Paleontology
Materia
Theropoda
Noasauridae
Brazil
Cretaceous
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:11336/275812
Acceder
id CONICETDig_3665968a616beaa61f260a204c682b18
oai_identifier_str oai:ri.conicet.gov.ar:11336/275812
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south BrazilLanger, Max C.de Oliveira Martins, NeuridesManzig, Paulo Césarde Souza Ferreira, Gabrielde Almeida Marsola, Júlio Césarda Silva Vidal, LucianoLima, RosanaFrediani Sant'ana, Lucas Cesarda Silva Lorençato, Rosangela HonórioEzcurra, Martin DanielTheropodaNoasauridaeBrazilCretaceoushttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Noasaurines form an enigmatic group of small theropod dinosaurs known from the Late Cretaceous of Gondwana. They are relatively rare, with notable records only in Argentina and Madagascar, and more incomplete remains reported for Brazil, India, and continental Africa. In south-central Brazil, the Bauru Basin has yielded a rich fauna of terrestrial tetrapods, most of which is known from the fluvial deposits of the Bauru Group. The mainly aeolian deposits of the Caiuá Group, on the contrary, bear a scarce fossil record composed of rare lizards, turtles, and pterosaurs. We report here the first dinosaur of the Caiuá Group, which also represents the best-preserved theropod so far recovered from the entire Bauru Basin. The identified skeletal parts (vertebrae, girdles, limbs, and scarce cranial elements) show that the new taxon was just over 1 m long, with unique anatomical traits among theropods. Metatarsals II and IV have very lateromedially compressed shafts, as are the blade-like ungual phalanges of the respective digits. This implies that the new dinosaur could have been functionally monodactyl, with a main central weight-bearing digit, flanked by neighboring elements positioned very close to digit III or even held free of the ground. Such anatomical adaptation is formerly unrecorded among archosaurs, but was previously inferred from footprints discovered during the 1970s in the same beds that yielded the new dinosaur. A phylogenetic analysis nests the new taxon within Noasaurinae, which is unresolved because of the multiple alternative positions that Noasaurus leali can take. The exclusion of that taxon results in positioning the new dinosaur as the sister-taxon of the Argentinean Velocisaurus unicus.Fil: Langer, Max C.. Universidade de Sao Paulo; BrasilFil: de Oliveira Martins, Neurides. Universidade de Sao Paulo; BrasilFil: Manzig, Paulo César. Universidade de Sao Paulo; BrasilFil: de Souza Ferreira, Gabriel. Universidade de Sao Paulo; BrasilFil: de Almeida Marsola, Júlio César. Universidade de Sao Paulo; BrasilFil: da Silva Vidal, Luciano. Universidade de Sao Paulo; BrasilFil: Lima, Rosana. Universidade de Sao Paulo; BrasilFil: Frediani Sant'ana, Lucas Cesar. Universidade de Sao Paulo; BrasilFil: da Silva Lorençato, Rosangela Honório. Universidade de Sao Paulo; BrasilFil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina79th Annual Meeting of Society of Vertebrate PaleontologyBrisbaneAustraliaSociety of Vertebrate PaleontologySociety of Vertebrate Paleotology2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/275812A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil; 79th Annual Meeting of Society of Vertebrate Paleontology; Brisbane; Australia; 2019; 137-137CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://vertpaleo.org/future-past-meetings/info:eu-repo/semantics/altIdentifier/url/https://vertpaleo.org/wp-content/uploads/2021/03/SVP-Program-book-v8_w-covers.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-03T09:56:29Zoai:ri.conicet.gov.ar:11336/275812instacron: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:34982025-12-03 09:56:30.005CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
title A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
spellingShingle A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
Langer, Max C.
Theropoda
Noasauridae
Brazil
Cretaceous
title_short A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
title_full A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
title_fullStr A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
title_full_unstemmed A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
title_sort A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil
dc.creator.none.fl_str_mv Langer, Max C.
de Oliveira Martins, Neurides
Manzig, Paulo César
de Souza Ferreira, Gabriel
de Almeida Marsola, Júlio César
da Silva Vidal, Luciano
Lima, Rosana
Frediani Sant'ana, Lucas Cesar
da Silva Lorençato, Rosangela Honório
Ezcurra, Martin Daniel
author Langer, Max C.
author_facet Langer, Max C.
de Oliveira Martins, Neurides
Manzig, Paulo César
de Souza Ferreira, Gabriel
de Almeida Marsola, Júlio César
da Silva Vidal, Luciano
Lima, Rosana
Frediani Sant'ana, Lucas Cesar
da Silva Lorençato, Rosangela Honório
Ezcurra, Martin Daniel
author_role author
author2 de Oliveira Martins, Neurides
Manzig, Paulo César
de Souza Ferreira, Gabriel
de Almeida Marsola, Júlio César
da Silva Vidal, Luciano
Lima, Rosana
Frediani Sant'ana, Lucas Cesar
da Silva Lorençato, Rosangela Honório
Ezcurra, Martin Daniel
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Theropoda
Noasauridae
Brazil
Cretaceous
topic Theropoda
Noasauridae
Brazil
Cretaceous
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Noasaurines form an enigmatic group of small theropod dinosaurs known from the Late Cretaceous of Gondwana. They are relatively rare, with notable records only in Argentina and Madagascar, and more incomplete remains reported for Brazil, India, and continental Africa. In south-central Brazil, the Bauru Basin has yielded a rich fauna of terrestrial tetrapods, most of which is known from the fluvial deposits of the Bauru Group. The mainly aeolian deposits of the Caiuá Group, on the contrary, bear a scarce fossil record composed of rare lizards, turtles, and pterosaurs. We report here the first dinosaur of the Caiuá Group, which also represents the best-preserved theropod so far recovered from the entire Bauru Basin. The identified skeletal parts (vertebrae, girdles, limbs, and scarce cranial elements) show that the new taxon was just over 1 m long, with unique anatomical traits among theropods. Metatarsals II and IV have very lateromedially compressed shafts, as are the blade-like ungual phalanges of the respective digits. This implies that the new dinosaur could have been functionally monodactyl, with a main central weight-bearing digit, flanked by neighboring elements positioned very close to digit III or even held free of the ground. Such anatomical adaptation is formerly unrecorded among archosaurs, but was previously inferred from footprints discovered during the 1970s in the same beds that yielded the new dinosaur. A phylogenetic analysis nests the new taxon within Noasaurinae, which is unresolved because of the multiple alternative positions that Noasaurus leali can take. The exclusion of that taxon results in positioning the new dinosaur as the sister-taxon of the Argentinean Velocisaurus unicus.
Fil: Langer, Max C.. Universidade de Sao Paulo; Brasil
Fil: de Oliveira Martins, Neurides. Universidade de Sao Paulo; Brasil
Fil: Manzig, Paulo César. Universidade de Sao Paulo; Brasil
Fil: de Souza Ferreira, Gabriel. Universidade de Sao Paulo; Brasil
Fil: de Almeida Marsola, Júlio César. Universidade de Sao Paulo; Brasil
Fil: da Silva Vidal, Luciano. Universidade de Sao Paulo; Brasil
Fil: Lima, Rosana. Universidade de Sao Paulo; Brasil
Fil: Frediani Sant'ana, Lucas Cesar. Universidade de Sao Paulo; Brasil
Fil: da Silva Lorençato, Rosangela Honório. Universidade de Sao Paulo; Brasil
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
79th Annual Meeting of Society of Vertebrate Paleontology
Brisbane
Australia
Society of Vertebrate Paleontology
description Noasaurines form an enigmatic group of small theropod dinosaurs known from the Late Cretaceous of Gondwana. They are relatively rare, with notable records only in Argentina and Madagascar, and more incomplete remains reported for Brazil, India, and continental Africa. In south-central Brazil, the Bauru Basin has yielded a rich fauna of terrestrial tetrapods, most of which is known from the fluvial deposits of the Bauru Group. The mainly aeolian deposits of the Caiuá Group, on the contrary, bear a scarce fossil record composed of rare lizards, turtles, and pterosaurs. We report here the first dinosaur of the Caiuá Group, which also represents the best-preserved theropod so far recovered from the entire Bauru Basin. The identified skeletal parts (vertebrae, girdles, limbs, and scarce cranial elements) show that the new taxon was just over 1 m long, with unique anatomical traits among theropods. Metatarsals II and IV have very lateromedially compressed shafts, as are the blade-like ungual phalanges of the respective digits. This implies that the new dinosaur could have been functionally monodactyl, with a main central weight-bearing digit, flanked by neighboring elements positioned very close to digit III or even held free of the ground. Such anatomical adaptation is formerly unrecorded among archosaurs, but was previously inferred from footprints discovered during the 1970s in the same beds that yielded the new dinosaur. A phylogenetic analysis nests the new taxon within Noasaurinae, which is unresolved because of the multiple alternative positions that Noasaurus leali can take. The exclusion of that taxon results in positioning the new dinosaur as the sister-taxon of the Argentinean Velocisaurus unicus.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/275812
A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil; 79th Annual Meeting of Society of Vertebrate Paleontology; Brisbane; Australia; 2019; 137-137
CONICET Digital
CONICET
url http://hdl.handle.net/11336/275812
identifier_str_mv A new desert-dwelling Noasaurine Theropod from the Caiuá group, Cretaceous of south Brazil; 79th Annual Meeting of Society of Vertebrate Paleontology; Brisbane; Australia; 2019; 137-137
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://vertpaleo.org/future-past-meetings/
info:eu-repo/semantics/altIdentifier/url/https://vertpaleo.org/wp-content/uploads/2021/03/SVP-Program-book-v8_w-covers.pdf
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.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Society of Vertebrate Paleotology
publisher.none.fl_str_mv Society of Vertebrate Paleotology
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_ 1850505964545900544
score 12.913667

Publicaciones similares