An avian coracoid from the Upper Cretaceous of Patagonia, Argentina
In the present paper, the new genus and species of neornithine bird, Lamarqueavis australis is described. The specimen consists on an isolated coracoid collected in Campanian-Maastrichtian beds of the Allen Formation, at the Bajo Trapalcó fossiliferous locality, Río Negro Province, Argentina. The sp...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Studia Geologica Salmanticensia
2011
|
Subjects: | |
Online Access: | https://revistas.usal.es/index.php/0211-8327/article/view/7642 |
id |
ftunisalamanojs:oai:ojs.pkp.sfu.ca:article/7642 |
---|---|
record_format |
openpolar |
spelling |
ftunisalamanojs:oai:ojs.pkp.sfu.ca:article/7642 2023-05-15T14:05:02+02:00 An avian coracoid from the Upper Cretaceous of Patagonia, Argentina Un coracoides de ave del Cretácico Superior de Patagonia, Argentina Agnolin, Federico L. 2011-02-16 application/pdf https://revistas.usal.es/index.php/0211-8327/article/view/7642 eng eng Studia Geologica Salmanticensia https://revistas.usal.es/index.php/0211-8327/article/view/7642/8861 https://revistas.usal.es/index.php/0211-8327/article/view/7642 Studia Geologica Salmanticensia; Vol. 46 Núm. 2 (2010); 99-119 0211-8327 Cretácico Argentina Patagonia coracoides Neornithes Cimolopterygidae Cretaceous coracoid info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftunisalamanojs 2022-05-12T20:03:01Z In the present paper, the new genus and species of neornithine bird, Lamarqueavis australis is described. The specimen consists on an isolated coracoid collected in Campanian-Maastrichtian beds of the Allen Formation, at the Bajo Trapalcó fossiliferous locality, Río Negro Province, Argentina. The specimen constitutes the first record from South America of the neornithine clade Cimolopterygidae, a group of modern-like birds that previously were known from Cretaceous and Paleogene strata of North America, Europe, and Asia. The new genus Lamarqueavis also includes previously described taxa, such as “Cimolopteryx” minima and “C.” petra, from the Late Cretaceous of North America. The new specimen fits well with the traditional hypothesis that suggests that derived ornithurine birds were the dominant taxa of shoreline and marine habitats during the Cretaceous, whereas in inland environments basal taxa were more abundant. Finally, on the basis of the meagre fossil neornithine record of the Cretaceous, previous hypotheses concerning the place of cradle of modern birds in Antarctica or North America are discussed. En el presente artículo, se describe el nuevo género y especie de ave Neornithes Lamarqueavis australis. El espécimen consiste en un coracoides aislado procedente de la Formación Allen (Campaniano-Maastrichtiano: Cretácico Superior) de la localidad de Bajo Trapalcó, provincia de Río Negro, Argentina. El espécimen constituye el primer registro sudamericano para el clado Cimolopterygidae, un grupo de aves previamente reconocido en estratos mesozoicos y paleógenos de Norteamérica, Europa y Asia. El nuevo género Lamarqueavis incluye también especies previamente descriptas como “Cimolopteryx” minima y “C.” petra, provenientes del Cretácico Superior de Norteamérica. El nuevo espécimen es coincidente con la hipótesis tradicional que sugiere que las aves Ornithurae derivadas fueron los taxones dominantes de los ambientes costeros y marinos mundiales a fines del Cretácico, mientras que en los ambientes estrictamente continentales abundaron taxones basales. Finalmente, sobre la base del pobre registro fósil de Neornithes en el Mesozoico, hipótesis previas acerca del Centro de Origen de las aves modernas en Norteamérica y Antártida son discutidas y analizadas en detalle. Article in Journal/Newspaper Antarc* Antarctica Antártida Universidad de Salamanca: Gestor Revistas Online Argentina Patagonia |
institution |
Open Polar |
collection |
Universidad de Salamanca: Gestor Revistas Online |
op_collection_id |
ftunisalamanojs |
language |
English |
topic |
Cretácico Argentina Patagonia coracoides Neornithes Cimolopterygidae Cretaceous coracoid |
spellingShingle |
Cretácico Argentina Patagonia coracoides Neornithes Cimolopterygidae Cretaceous coracoid Agnolin, Federico L. An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
topic_facet |
Cretácico Argentina Patagonia coracoides Neornithes Cimolopterygidae Cretaceous coracoid |
description |
In the present paper, the new genus and species of neornithine bird, Lamarqueavis australis is described. The specimen consists on an isolated coracoid collected in Campanian-Maastrichtian beds of the Allen Formation, at the Bajo Trapalcó fossiliferous locality, Río Negro Province, Argentina. The specimen constitutes the first record from South America of the neornithine clade Cimolopterygidae, a group of modern-like birds that previously were known from Cretaceous and Paleogene strata of North America, Europe, and Asia. The new genus Lamarqueavis also includes previously described taxa, such as “Cimolopteryx” minima and “C.” petra, from the Late Cretaceous of North America. The new specimen fits well with the traditional hypothesis that suggests that derived ornithurine birds were the dominant taxa of shoreline and marine habitats during the Cretaceous, whereas in inland environments basal taxa were more abundant. Finally, on the basis of the meagre fossil neornithine record of the Cretaceous, previous hypotheses concerning the place of cradle of modern birds in Antarctica or North America are discussed. En el presente artículo, se describe el nuevo género y especie de ave Neornithes Lamarqueavis australis. El espécimen consiste en un coracoides aislado procedente de la Formación Allen (Campaniano-Maastrichtiano: Cretácico Superior) de la localidad de Bajo Trapalcó, provincia de Río Negro, Argentina. El espécimen constituye el primer registro sudamericano para el clado Cimolopterygidae, un grupo de aves previamente reconocido en estratos mesozoicos y paleógenos de Norteamérica, Europa y Asia. El nuevo género Lamarqueavis incluye también especies previamente descriptas como “Cimolopteryx” minima y “C.” petra, provenientes del Cretácico Superior de Norteamérica. El nuevo espécimen es coincidente con la hipótesis tradicional que sugiere que las aves Ornithurae derivadas fueron los taxones dominantes de los ambientes costeros y marinos mundiales a fines del Cretácico, mientras que en los ambientes estrictamente continentales abundaron taxones basales. Finalmente, sobre la base del pobre registro fósil de Neornithes en el Mesozoico, hipótesis previas acerca del Centro de Origen de las aves modernas en Norteamérica y Antártida son discutidas y analizadas en detalle. |
format |
Article in Journal/Newspaper |
author |
Agnolin, Federico L. |
author_facet |
Agnolin, Federico L. |
author_sort |
Agnolin, Federico L. |
title |
An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
title_short |
An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
title_full |
An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
title_fullStr |
An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
title_full_unstemmed |
An avian coracoid from the Upper Cretaceous of Patagonia, Argentina |
title_sort |
avian coracoid from the upper cretaceous of patagonia, argentina |
publisher |
Studia Geologica Salmanticensia |
publishDate |
2011 |
url |
https://revistas.usal.es/index.php/0211-8327/article/view/7642 |
geographic |
Argentina Patagonia |
geographic_facet |
Argentina Patagonia |
genre |
Antarc* Antarctica Antártida |
genre_facet |
Antarc* Antarctica Antártida |
op_source |
Studia Geologica Salmanticensia; Vol. 46 Núm. 2 (2010); 99-119 0211-8327 |
op_relation |
https://revistas.usal.es/index.php/0211-8327/article/view/7642/8861 https://revistas.usal.es/index.php/0211-8327/article/view/7642 |
_version_ |
1766276670641143808 |