Artículo
A carpometacarpus from the upper cretaceous of patagonia sheds light on the Ornithurine bird radiation
Fecha de publicación:
03/2012
Editorial:
Springer Heidelberg
Revista:
Palaeontologische Zeitschrift
ISSN:
0031-0220
e-ISSN:
1867-6812
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report the discovery of an isolated avian carpometacarpus from the Upper Cretaceous Allen Formation (Campanian-Maastrichtian), Salitral Moreno, Río Negro Province, Argentina. This specimen is referred to cf. Neornithes because it presents a distinct but shallow infratrochlear fossa, a shortened ventral rim of the carpal trochlea that does not contact the base of the extensor process, and an extensor process conspicuously surpassing cranially the articular facet for digit I. The isolated nature of the specimen precludes its inclusion within the main neornithine lineages. Although it may represent part of the crown clade Neornithes, the limited data available do not confidently support placement within any particular lineage. The carpometacarpus constitutes one of the few records of Mesozoic Neornithine-like birds for South America.
Palabras clave:
Argentina
,
Late Cretaceous
,
Neornithes
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Agnolin, Federico; Novas, Fernando Emilio; A carpometacarpus from the upper cretaceous of patagonia sheds light on the Ornithurine bird radiation; Springer Heidelberg; Palaeontologische Zeitschrift; 86; 1; 3-2012; 85-89
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