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dc.contributor.author
Mannion, Philip D.
dc.contributor.author
Otero, Alejandro
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dc.date.available
2023-05-11T14:03:37Z
dc.date.issued
2012-03
dc.identifier.citation
Mannion, Philip D.; Otero, Alejandro; A reappraisal of the Late Cretaceous Argentinean sauropod dinosaur Argyrosaurus superbus, with a description of a new titanosaur genus; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 32; 3; 3-2012; 614-638
dc.identifier.issn
0272-4634
dc.identifier.uri
http://hdl.handle.net/11336/197194
dc.description.abstract
Argyrosaurus superbus is one of the earliest named Argentinean dinosaurs. The holotype comprises a complete forelimb, probably from the Upper Member of the Bajo Barreal Formation (Late Cretaceous), Chubut Province. Numerous remains have been referred to Argyrosaurus from Argentina and Uruguay; however, the type specimen has not been adequately diagnosed and referrals have predominantly been based upon their large size. Here we re-describe Argyrosaurus, demonstrating it to be a valid titanosaur genus based on five autapomorphies, as well as a unique character combination. The exact placement of Argyrosaurus within Titanosauria is uncertain, although the probable presence of carpal bones, otherwise unknown in titanosaurs, may indicate a basal position. None of the referred remains can be attributed to Argyrosaurus, and most should be regarded as indeterminate titanosauriforms. The exception to this is a partial skeleton from the Lower Member of the Bajo Barreal Formation (early Late Cretaceous), Chubut Province, comprising dorsal and caudal vertebrae, as well as numerous appendicular elements. This specimen is distinct from Argyrosaurus and can also be differentiated from other sauropods based on an unusual character combination (including plesiomorphic tarsus), plus one autapomorphy. Elaltitan lilloi gen. et sp. nov. displays numerous titanosaur characters and shares several features with derived taxa such as Neuquensaurus, Opisthocoelicaudia, Rapetosaurus, Saltasaurus and Trigonosaurus. Elaltitan can be referred to Lithostrotia; however, its precise position within this clade must await future phylogenetic analysis. The revision and description of the titanosaurs Argyrosaurus and Elaltitan provides new information on this diverse but still poorly understood clade.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society of Vertebrate Paleontology
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
dc.subject
BAJO BARREAL FORMATION
dc.subject
CHUBUT PROVINCE
dc.subject
GONDWANA
dc.subject
MESOZOIC
dc.subject
TITANOSAURIFORM
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A reappraisal of the Late Cretaceous Argentinean sauropod dinosaur Argyrosaurus superbus, with a description of a new titanosaur genus
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-04-20T12:32:24Z
dc.journal.volume
32
dc.journal.number
3
dc.journal.pagination
614-638
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Mannion, Philip D.. Imperial College London; Reino Unido
dc.description.fil
Fil: Otero, Alejandro. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.journal.title
Journal of Vertebrate Paleontology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/02724634.2012.660898
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/02724634.2012.660898
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