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dc.contributor.author
Pinheiro, André E. P.
dc.contributor.author
Fortier, Daniel C.
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Pol, Diego
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Campos, Diógenes A.
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Bergqvist, Lílian P.
dc.date.available
2016-04-27T14:26:47Z
dc.date.issued
2013-05
dc.identifier.citation
Pinheiro, André E. P.; Fortier, Daniel C.; Pol, Diego; Campos, Diógenes A.; Bergqvist, Lílian P.; A new Eocaiman (Alligatoridae, Crocodylia) from the Itaboraí Basin, Paleogene of Rio de Janeiro, Brazil; Taylor & Francis; Historical Biology; 25; 3; 5-2013; 327-337
dc.identifier.issn
0891-2963
dc.identifier.uri
http://hdl.handle.net/11336/5404
dc.description.abstract
A new small species of Eocaiman is described on the basis of three anterior left mandibular rami and one isolated tooth. The specimens came from the middle-upper Paleocene Itabora ́ı Basin (Rio de Janeiro State, Brazil; Itaboraian South American Land Mammal Age). The new taxon differs from the other two Eocaiman species, such as its small size, likely participation of the splenial in the mandibular symphysis, a reduced angle between the longitudinal axis of the symphysis and the mandibular ramus, and enlarged ninth and tenth dentary teeth (in addition to the large first and fourth dentary teeth). The participation of the splenial in the mandibular symphysis is a unique character among caimanines (with the only possible exception being Tsoabichi greenriverensis). The new taxon provides new information on the taxonomic and anatomical diversity of the genus Eocaiman, a taxon of prime importance to understand the evolutionary origins of caimans given its position as the basalmost member of Caimaninae. Furthermore, the new taxon has a relatively small body size in comparison with other species of Eocaiman, a case paralleled by other Itaboraian reptilian groups (e.g. snakes), suggesting that this ecosystem provides critical data to test the relationship between reptilian body size and climate.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Crocodylia
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Paleocene
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Brazil
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Evolution
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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
A new Eocaiman (Alligatoridae, Crocodylia) from the Itaboraí Basin, Paleogene of Rio de Janeiro, Brazil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-06 15:52:43.262787-03
dc.journal.volume
25
dc.journal.number
3
dc.journal.pagination
327-337
dc.journal.pais
Reino Unido
dc.journal.ciudad
London
dc.description.fil
Fil: Pinheiro, André E. P.. Universidade Federal do Rio de Janeiro. Departamento de Geologia. Laboratório de Macrofósseis; Brasil
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Fil: Fortier, Daniel C.. Universidade Federal do Rio Grande do Sul; Brasil. Universidade Federal de Minas Gerais. Intituto de Geociências; Brasil
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Fil: Pol, Diego. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
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Fil: Campos, Diógenes A.. Museu de Ciências da Terra. Departamento Nacional de Produção Mineral; Brasil
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Fil: Bergqvist, Lílian P.. Universidade Federal do Rio de Janeiro. Departamento de Geologia. Laboratório de Macrofósseis; Brasil
dc.journal.title
Historical Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/08912963.2012.705838
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/08912963.2012.705838
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1080/08912963.2012.705838
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