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dc.contributor.author
Prevosti, Francisco Juan
dc.contributor.author
Forasiepi, Analia Marta
dc.contributor.author
Zimicz, Ana Natalia
dc.date.available
2015-11-03T21:16:18Z
dc.date.issued
2013-01
dc.identifier.citation
Prevosti, Francisco Juan; Forasiepi, Analia Marta; Zimicz, Ana Natalia; The Evolution of the Cenozoic Terrestrial Mammalian Predator Guild in South America: Competition or Replacement?; Springer; Journal of Mammalian Evolution; 20; 1; 1-2013; 3-21
dc.identifier.issn
1064-7554
dc.identifier.uri
http://hdl.handle.net/11336/2663
dc.description.abstract
South America was isolated from other continents during most of the Cenozoic, developing a very particular mammalian fauna. In contrast to North America, Europe, Asia, Africa, and even Australia, the carnivore adaptative zone in South America was filled by crocodiles (Sebecidae), large snakes (Madtsoiidae), large birds (Phorusrhacidae), and metatherian mammals (Sparassodonta). Sparassodonta was diverse and comprised a wide range of sizes (≈ 2-50 kg) and food habits. This diversity decreased towards the late Miocene (Huayquerian) and the group became extinct in the middle Pliocene (≈ 3 Ma, Chapadmalalan). Several authors have suggested that the cause of this decline and extinction was the ingression of placental Carnivores to South America (about 6-7 Ma ago), because they putatively competed with the Sparassodonta. This hypothesis was criticized in recent years. With the intention of testing the hypothesis of ?competitive displacement?, we review the fossil record of South American Sparassodonta and Carnivora, collect data about diversity and first and last appearances, and estimate size and diet of the taxa considered here. The diversity of Sparassodonta is low relative to that of Carnivora throughout the Cenozoic. The highest number is found in the early Miocene (Santacrucian), with eleven species. The fossil record shows overlap of groups during the late Miocene-middle Pliocene, and the Sparassodonta?s richness curve declines beginning with the first record of Carnivora during the Huayquerian. Despite this overlap, carnivores were represented by four species or fewer during the late Miocene-Pliocene, and their diversity reached approximately 20 species only in the early Pleistocene (Ensenadan). Moreover, Carnivora was first represented by small-sized, omnivorous species, with large omnivores first appearing in the Chapadmalalan. During this period, Sparassodonta was represented by large and small hypercarnivores and a single large omnivore species. These data suggest that factors other than competitive displacement may have caused the extinction of the Sparassodonta.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CARNIVORA
dc.subject
COMPETITIVE DISPLACEMENT
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ECOLOGICAL REPLACEMENT
dc.subject
SPARASSODONTA
dc.subject.classification
Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
The Evolution of the Cenozoic Terrestrial Mammalian Predator Guild in South America: Competition or Replacement?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.identifier.eissn
1573-7055
dc.journal.volume
20
dc.journal.number
1
dc.journal.pagination
3-21
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Prevosti, Francisco Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina
dc.description.fil
Fil: Forasiepi, Analia Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológica Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael; Argentina
dc.description.fil
Fil: Zimicz, Ana Natalia. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Cátedra de Geología Argentina y Sudamericana; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
dc.journal.title
Journal of Mammalian Evolution
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10914-011-9175-9
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10914-011-9175-9
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