globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.12.009
论文题名:
A New Pleistocene bird assemblage from the Southern Pampas (Buenos Aires, Argentina)
作者: Cenizo M.M.; Agnolin F.L.; Pomi L.H.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 420
起始页码: 65
结束页码: 81
语种: 英语
英文关键词: Avifaunas ; Interstadial ; Luján Formation ; Marine Isotope Stage 3 ; Paleoenvironments ; Pampean Region
英文摘要: In the present paper we report the most complete fossil avifauna from the southern cone of South America. The specimens here described were collected in the Paso Otero locality, at the middle stream of the Quequén Grande River, Pampean Region (Buenos Aires Province, Argentina). The fossiliferous levels belong to the La Chumbiada Member of Luján Formation (37,800 ± 2300. yr BP, late Pleistocene). The assemblage is represented by 60 specimens belonging to at least 22 taxa. The radiocarbon age indicates that Paso Otero birds represent the oldest late Pleistocene avifauna known from the South American continent and the first coming from a clear interstadial event (MIS3). Available evidence indicates similar environmental conditions during the MIS3 interstadial in the Pampean Region of Argentina and the post-Last Glacial Maximum stadials in southeastern Brazil. The absence of significant extinction events in the latest Pleistocene-early Holocene avifaunas of Brazil and Argentina suggests that the main avifaunal composition along southeastern continental lowlands may not be affected by the cyclic retraction and extension of open environments. On the contrary, the fossil record of Peru and Ecuador demonstrates that a large number of taxa, including aquatic and predatory-scavenger birds, have gone extinct along Andean environments at the Pacific coast, and late Pleistocene climatic oscillations may have played a more dramatic impact in these avian communities. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69033
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作者单位: Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Uruguay 151, Santa Rosa, La Pampa, Argentina; Fundación de Historia Natural Félix de Azara, Departamento de Ciencias Naturales y Antropología, CEBBAD, Universidad Maimónides, Hidalgo 775, Ciudad Autónoma de Buenos Aires, Argentina; Laboratorio de Anatomía Comparada y Evolución de los Vertebrados, Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Av. Angel Gallardo, 470, Buenos Aires, Argentina; Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Calle 122 y 60, La Plata, Argentina

Recommended Citation:
Cenizo M.M.,Agnolin F.L.,Pomi L.H.. A New Pleistocene bird assemblage from the Southern Pampas (Buenos Aires, Argentina)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,420
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