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dc.contributor.author
Agnolin, Federico
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dc.contributor.author
Ezcurra, Martin Daniel
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dc.date.available
2021-01-28T00:31:34Z
dc.date.issued
2019-09
dc.identifier.citation
Agnolin, Federico; Ezcurra, Martin Daniel; The validity of Lagosuchus talampayensis Romer, 1971 (Archosauria, Dinosauriformes), from the Late Triassic of Argentina; Field Museum; Breviora; 565; 1; 9-2019; 1-21
dc.identifier.issn
0006-9698
dc.identifier.uri
http://hdl.handle.net/11336/123975
dc.description.abstract
The Chañares Formation (latest Middle–earliest Late Triassic) of northwestern Argentina is part of the Ischigualasto–Villa Unión Basin and preserves a rich fossil vertebrate record discovered by a crew of the Museum of Comparative Zoology (Harvard University) led by Alfred Romer. A diverse non-dinosaurian dinosauromorph assemblage has been described from this formation and includes the iconic, small-sized “proto-dinosaur” Lagosuchus talampayensis Romer, 1971. This species has been crucial to understand the body plan of dinosaur precursors and the higher-level phylogenetic relationships of dinosaurs. More recently, authors considered this genus and species as nomina dubia. The aim of this contribution is to reassess the taxonomic validity of L. talampayensis. New observations indicate that the holotype of L. talampayensis differs from other avemetatarsalians, but not from the hypodigm of Marasuchus lilloensis, in the presence of a globose femoral head (strongly convex proximal and medial surfaces) with a distinctly dorsal orientation and a sub-oval outline in proximal view as a result of incipient posterior and posteromedial tuberosities. Thus, Lagosuchus talampayensis is here considered a senior synonym of “Marasuchus lilloensis” (Romer, 1972). Our conclusions have implications in the knowledge about early dinosauromorph diversity and the taxonomic richness of the group in the Chañares Formation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Field Museum
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
TRIASSIC
dc.subject
ARGENTINA
dc.subject
DINOSAURIFORMES
dc.subject
MARASUCHUS LILLOENSIS
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
The validity of Lagosuchus talampayensis Romer, 1971 (Archosauria, Dinosauriformes), from the Late Triassic of Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-26T17:44:36Z
dc.identifier.eissn
1938-2979
dc.journal.volume
565
dc.journal.number
1
dc.journal.pagination
1-21
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Massachusetts
dc.description.fil
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides; Argentina
dc.description.fil
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
dc.journal.title
Breviora
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3099/0006-9698-565.1.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/breviora/volume-565/issue-1/0006-9698-565.1.1/THE-VALIDITY-OF-LAGOSUCHUS-TALAMPAYENSIS-ROMER-1971-ARCHOSAURIA-DINOSAURIFORMES-FROM/10.3099/0006-9698-565.1.1.short
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