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dc.contributor.author
Vizcaíno, Sergio Fabián
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dc.date.available
2020-07-02T19:51:02Z
dc.date.issued
2000-05
dc.identifier.citation
Vizcaíno, Sergio Fabián; Vegetation Partitioning among Lujanian (Late-Pleistocene/Early-Holocene) Armored Herbivores in the Pampean Region; Center for the Study of the first Americans; Current Research in the Pleistocene; 17; 5-2000; 135-137
dc.identifier.issn
8755-898X
dc.identifier.uri
http://hdl.handle.net/11336/108701
dc.description.abstract
The majority of the fossils of Lujanian Land Mammal Age are recovered from Pampean Region sediments of the Guerrero member of the Lujan Formation (c. 20,000 yr BP-8,500 yr B.P.). A dry, cool climate occurred in the Pampean Region with climatic conditions similar to the climate today in Northern Patagonia. The vegetation has been interpreted as a psammophytic steppe. The Luján local fauna is impressive for its abundance of large herbivores. There are about 30 species of herbivorous mammals ranging from approximately 50 kg to several tons, more than half of them edentates. Within them, the armored forms (Cingulata) are predominant. The coexistence of so many large herbivores in such a poor environment suggests strong competition for resources. Here I analyze plant resource exploitation among sympatric Lujanian herbivorous armored xenarthrans. Morphofunctional studies reveal that the main dietary differences among these cingulates were in the degree of coarseness of the vegetation they were capable of processing. While the eutatine is mainly a browser, the larger pampatheres (up to 200 kg) and glyptodonts (between one and two tons) represent increasing degrees of grazing habits. Morphometric and morphofunctional studies currently in progress suggest that the smaller glyptodonts had more browsing habits, while the larger are proposed to have grazed to a greater extent. This scenario may be applicable to other herbivores.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Center for the Study of the first Americans
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CINGULATES
dc.subject
LUJANIAN AGE
dc.subject
DIET
dc.subject
ECOLOGY
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
Vegetation Partitioning among Lujanian (Late-Pleistocene/Early-Holocene) Armored Herbivores in the Pampean Region
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-11T15:16:27Z
dc.journal.volume
17
dc.journal.pagination
135-137
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Texas
dc.description.fil
Fil: Vizcaíno, Sergio Fabián. 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
Current Research in the Pleistocene
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://liberalarts.tamu.edu/csfa/publications-archives/pleistocene-archives/
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