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A new vertebrate continental assemblage from the Tortonian of Venezuela

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dc.contributor.author Carrillo-Briceño, J.D.
dc.contributor.author Reyes-Cespedes, A.E.
dc.contributor.author Salas-Gismondi, R.
dc.contributor.author Sánchez, R.
dc.date.accessioned 2019-04-24T18:23:59Z
dc.date.available 2019-04-24T18:23:59Z
dc.date.issued 2018
dc.identifier.uri https://hdl.handle.net/20.500.12866/6504
dc.description.abstract A wide variety of aquatic vertebrates from fluvio-lacustrine facies of northern South America (Colombia and Venezuela) have been used as unequivocal evidence to support hydrographic connections between western Amazonia and the Proto-Caribbean Sea during the Miocene. By the end of the Miocene, changes in the major hydrographic systems of the region produced losses of habitats and a regional faunal turnover, as has been documented in the geological record of the Urumaco region. Here, we report a new Tortonian aquatic and terrestrial vertebrate assemblage from two localities of the Caujarao Formation (El Muaco Member) in western Venezuela. The vertebrate assemblage includes a gharial (cf. †Gryposuchus pachakamue), alligatorid crocodylians (†Purussaurus and Alligatoridae indet.), a freshwater turtle (Chelus sp.), snakes (cf. Eunectes sp.), serrasalmids and pimelodids and thorny catfishes, a rodent (†Potamarchus sp.), pampatheres (†Scirrotherium sp.), sloths, as well as plant remains (coal and amber). Although the Caujarao Formation has been referred to as a fully marine environment, the new assemblage reported here suggests a freshwater input to the coastal area. Taxonomic and biogeographic affinities between the Muaco Member community and that reported from the Miocene proto-Amazonian systems are indicative of the persistence of ecological and hydrographic continuity at minimum until the end of the Miocene in at least an area of northwestern South America. en_US
dc.language.iso eng
dc.publisher Springer
dc.relation.ispartofseries Swiss Journal of Palaeontology
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Neogene en_US
dc.subject Miocene en_US
dc.subject Caujarao Formation en_US
dc.subject Orinoco River en_US
dc.subject Biogeography en_US
dc.title A new vertebrate continental assemblage from the Tortonian of Venezuela en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1007/s13358-018-0180-y
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.05.03
dc.relation.issn 1664-2384


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