A Miocene relative of the Ganges River dolphin from the amazonian basin

Autores
Bianucci, Giovanni; Lambert, Oliver; Salas Gismondi, Rodolfo; Tejada, Julia; Pujos, François Roger Francis; Urbina, Mario; Antoine, Pierre Olivier
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Today, only three odontocete (toothed whales) genera are restricted to freshwater habitats: the Amazon River dolphin (Inia geoffrensis), the possibly extinct Yangtze River dolphin (Lipotes vexillifer) (Turvey et al., 2007), and the Ganges and Indus river dolphins (Platanista gangetica). Even if their phylogenetic relationships are still debated, Inia, Lipotes, and Platanista are now recognized as belonging to different families (Iniidae, Lipotidae, and Platanistidae, respectively) on the basis of morphological and molecular characters (Muizon, 1988; Cassens et al., 2000; Hamilton et al., 2001; Nikaido et al., 2001; McGowen et al., 2009; Geisler et al., 2011, 2012). Considering their geographic distribution and the discovery of some fossil relatives in marine deposits, for example, the iniid Meherrinia, the lipotid Parapontoporia, and the platanistids Prepomatodelphis, Pomatodelphis, and Zarachis, the current habitat of freshwater dolphins must be explained by independent episodes of colonization of freshwater environments (Cassens et al., 2000; Geisler et al., 2011, 2012). Several fragmentary fossil specimens, isolated teeth or jaw fragments, have been tentatively attributed in the past to unknown species that are thought to be closely related to extant river dolphin genera (e.g., Zhou et al., 1984; review in Muizon, 1988), but until now there were no diagnostic fossil remains that could provide clues about the early steps of these colonization episodes. More specifically, the fossil record of Platanistinae, the subfamily including the extant Platanista, is scarce, with only one tentative record from early Miocene, coastal deposits of Oregon, north Pacific. This specimen consists of an isolated mandibular symphyseal region that is transversely compressed (Barnes, 2006). Even if we consider this attribution as valid, a long ghost lineage characterizes most of the history of the Platanistinae, the latter having diverged from the extinct subfamily Pomatodelphininae since at least the latest early Miocene (Barnes, 2002, 2006). We present here a new fossil platanistine specimen: a periotic from the middle Miocene of Peruvian Amazonia. This highly diagnostic ear bone partly fills the ghost lineage mentioned above and provides insights on the shifts to freshwater environments by various odontocete clades, a phenomenon probably underestimated due to the lack of fossils from the freshwater sedimentary record, and probably not just limited to extant clades of freshwater odontocetes (Fordyce, 1983).
Fil: Bianucci, Giovanni. Universita di Pisa. Dipartimento di Scienze della Terra; Italia
Fil: Lambert, Oliver. Institut royal des sciences naturelles de Belgique. Departement de paleontologie; Bélgica
Fil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú
Fil: Tejada, Julia. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú. Institut Français d’etudes Andines; Perú
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Institut Français d’etudes Andines; Perú
Fil: Urbina, Mario. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú
Fil: Antoine, Pierre Olivier. Universite Montpellier Ii; Francia
Materia
Systematic
Dolphin
Peruvian Amazon
Miocene
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/2861

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network_name_str CONICET Digital (CONICET)
spelling A Miocene relative of the Ganges River dolphin from the amazonian basinBianucci, GiovanniLambert, OliverSalas Gismondi, RodolfoTejada, JuliaPujos, François Roger FrancisUrbina, MarioAntoine, Pierre OlivierSystematicDolphinPeruvian AmazonMiocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Today, only three odontocete (toothed whales) genera are restricted to freshwater habitats: the Amazon River dolphin (Inia geoffrensis), the possibly extinct Yangtze River dolphin (Lipotes vexillifer) (Turvey et al., 2007), and the Ganges and Indus river dolphins (Platanista gangetica). Even if their phylogenetic relationships are still debated, Inia, Lipotes, and Platanista are now recognized as belonging to different families (Iniidae, Lipotidae, and Platanistidae, respectively) on the basis of morphological and molecular characters (Muizon, 1988; Cassens et al., 2000; Hamilton et al., 2001; Nikaido et al., 2001; McGowen et al., 2009; Geisler et al., 2011, 2012). Considering their geographic distribution and the discovery of some fossil relatives in marine deposits, for example, the iniid Meherrinia, the lipotid Parapontoporia, and the platanistids Prepomatodelphis, Pomatodelphis, and Zarachis, the current habitat of freshwater dolphins must be explained by independent episodes of colonization of freshwater environments (Cassens et al., 2000; Geisler et al., 2011, 2012). Several fragmentary fossil specimens, isolated teeth or jaw fragments, have been tentatively attributed in the past to unknown species that are thought to be closely related to extant river dolphin genera (e.g., Zhou et al., 1984; review in Muizon, 1988), but until now there were no diagnostic fossil remains that could provide clues about the early steps of these colonization episodes. More specifically, the fossil record of Platanistinae, the subfamily including the extant Platanista, is scarce, with only one tentative record from early Miocene, coastal deposits of Oregon, north Pacific. This specimen consists of an isolated mandibular symphyseal region that is transversely compressed (Barnes, 2006). Even if we consider this attribution as valid, a long ghost lineage characterizes most of the history of the Platanistinae, the latter having diverged from the extinct subfamily Pomatodelphininae since at least the latest early Miocene (Barnes, 2002, 2006). We present here a new fossil platanistine specimen: a periotic from the middle Miocene of Peruvian Amazonia. This highly diagnostic ear bone partly fills the ghost lineage mentioned above and provides insights on the shifts to freshwater environments by various odontocete clades, a phenomenon probably underestimated due to the lack of fossils from the freshwater sedimentary record, and probably not just limited to extant clades of freshwater odontocetes (Fordyce, 1983).Fil: Bianucci, Giovanni. Universita di Pisa. Dipartimento di Scienze della Terra; ItaliaFil: Lambert, Oliver. Institut royal des sciences naturelles de Belgique. Departement de paleontologie; BélgicaFil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; PerúFil: Tejada, Julia. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú. Institut Français d’etudes Andines; PerúFil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Institut Français d’etudes Andines; PerúFil: Urbina, Mario. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; PerúFil: Antoine, Pierre Olivier. Universite Montpellier Ii; FranciaSoc Vertebrate Paleontology2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2861Bianucci, Giovanni; Lambert, Oliver; Salas Gismondi, Rodolfo; Tejada, Julia; Pujos, François Roger Francis; et al.; A Miocene relative of the Ganges River dolphin from the amazonian basin; Soc Vertebrate Paleontology; Journal Of Vertebrate Paleontology; 33; 3; 5-2013; 741-7450272-4634enginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/02724634.2013.734888info:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2013.734888info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:32:52Zoai:ri.conicet.gov.ar:11336/2861instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:32:52.894CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A Miocene relative of the Ganges River dolphin from the amazonian basin
title A Miocene relative of the Ganges River dolphin from the amazonian basin
spellingShingle A Miocene relative of the Ganges River dolphin from the amazonian basin
Bianucci, Giovanni
Systematic
Dolphin
Peruvian Amazon
Miocene
title_short A Miocene relative of the Ganges River dolphin from the amazonian basin
title_full A Miocene relative of the Ganges River dolphin from the amazonian basin
title_fullStr A Miocene relative of the Ganges River dolphin from the amazonian basin
title_full_unstemmed A Miocene relative of the Ganges River dolphin from the amazonian basin
title_sort A Miocene relative of the Ganges River dolphin from the amazonian basin
dc.creator.none.fl_str_mv Bianucci, Giovanni
Lambert, Oliver
Salas Gismondi, Rodolfo
Tejada, Julia
Pujos, François Roger Francis
Urbina, Mario
Antoine, Pierre Olivier
author Bianucci, Giovanni
author_facet Bianucci, Giovanni
Lambert, Oliver
Salas Gismondi, Rodolfo
Tejada, Julia
Pujos, François Roger Francis
Urbina, Mario
Antoine, Pierre Olivier
author_role author
author2 Lambert, Oliver
Salas Gismondi, Rodolfo
Tejada, Julia
Pujos, François Roger Francis
Urbina, Mario
Antoine, Pierre Olivier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Systematic
Dolphin
Peruvian Amazon
Miocene
topic Systematic
Dolphin
Peruvian Amazon
Miocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Today, only three odontocete (toothed whales) genera are restricted to freshwater habitats: the Amazon River dolphin (Inia geoffrensis), the possibly extinct Yangtze River dolphin (Lipotes vexillifer) (Turvey et al., 2007), and the Ganges and Indus river dolphins (Platanista gangetica). Even if their phylogenetic relationships are still debated, Inia, Lipotes, and Platanista are now recognized as belonging to different families (Iniidae, Lipotidae, and Platanistidae, respectively) on the basis of morphological and molecular characters (Muizon, 1988; Cassens et al., 2000; Hamilton et al., 2001; Nikaido et al., 2001; McGowen et al., 2009; Geisler et al., 2011, 2012). Considering their geographic distribution and the discovery of some fossil relatives in marine deposits, for example, the iniid Meherrinia, the lipotid Parapontoporia, and the platanistids Prepomatodelphis, Pomatodelphis, and Zarachis, the current habitat of freshwater dolphins must be explained by independent episodes of colonization of freshwater environments (Cassens et al., 2000; Geisler et al., 2011, 2012). Several fragmentary fossil specimens, isolated teeth or jaw fragments, have been tentatively attributed in the past to unknown species that are thought to be closely related to extant river dolphin genera (e.g., Zhou et al., 1984; review in Muizon, 1988), but until now there were no diagnostic fossil remains that could provide clues about the early steps of these colonization episodes. More specifically, the fossil record of Platanistinae, the subfamily including the extant Platanista, is scarce, with only one tentative record from early Miocene, coastal deposits of Oregon, north Pacific. This specimen consists of an isolated mandibular symphyseal region that is transversely compressed (Barnes, 2006). Even if we consider this attribution as valid, a long ghost lineage characterizes most of the history of the Platanistinae, the latter having diverged from the extinct subfamily Pomatodelphininae since at least the latest early Miocene (Barnes, 2002, 2006). We present here a new fossil platanistine specimen: a periotic from the middle Miocene of Peruvian Amazonia. This highly diagnostic ear bone partly fills the ghost lineage mentioned above and provides insights on the shifts to freshwater environments by various odontocete clades, a phenomenon probably underestimated due to the lack of fossils from the freshwater sedimentary record, and probably not just limited to extant clades of freshwater odontocetes (Fordyce, 1983).
Fil: Bianucci, Giovanni. Universita di Pisa. Dipartimento di Scienze della Terra; Italia
Fil: Lambert, Oliver. Institut royal des sciences naturelles de Belgique. Departement de paleontologie; Bélgica
Fil: Salas Gismondi, Rodolfo. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú
Fil: Tejada, Julia. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú. Institut Français d’etudes Andines; Perú
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Institut Français d’etudes Andines; Perú
Fil: Urbina, Mario. Universidad Nacional Mayor de San Marcos. Museo de historia natural. Paleontología de Vertebrados; Perú
Fil: Antoine, Pierre Olivier. Universite Montpellier Ii; Francia
description Today, only three odontocete (toothed whales) genera are restricted to freshwater habitats: the Amazon River dolphin (Inia geoffrensis), the possibly extinct Yangtze River dolphin (Lipotes vexillifer) (Turvey et al., 2007), and the Ganges and Indus river dolphins (Platanista gangetica). Even if their phylogenetic relationships are still debated, Inia, Lipotes, and Platanista are now recognized as belonging to different families (Iniidae, Lipotidae, and Platanistidae, respectively) on the basis of morphological and molecular characters (Muizon, 1988; Cassens et al., 2000; Hamilton et al., 2001; Nikaido et al., 2001; McGowen et al., 2009; Geisler et al., 2011, 2012). Considering their geographic distribution and the discovery of some fossil relatives in marine deposits, for example, the iniid Meherrinia, the lipotid Parapontoporia, and the platanistids Prepomatodelphis, Pomatodelphis, and Zarachis, the current habitat of freshwater dolphins must be explained by independent episodes of colonization of freshwater environments (Cassens et al., 2000; Geisler et al., 2011, 2012). Several fragmentary fossil specimens, isolated teeth or jaw fragments, have been tentatively attributed in the past to unknown species that are thought to be closely related to extant river dolphin genera (e.g., Zhou et al., 1984; review in Muizon, 1988), but until now there were no diagnostic fossil remains that could provide clues about the early steps of these colonization episodes. More specifically, the fossil record of Platanistinae, the subfamily including the extant Platanista, is scarce, with only one tentative record from early Miocene, coastal deposits of Oregon, north Pacific. This specimen consists of an isolated mandibular symphyseal region that is transversely compressed (Barnes, 2006). Even if we consider this attribution as valid, a long ghost lineage characterizes most of the history of the Platanistinae, the latter having diverged from the extinct subfamily Pomatodelphininae since at least the latest early Miocene (Barnes, 2002, 2006). We present here a new fossil platanistine specimen: a periotic from the middle Miocene of Peruvian Amazonia. This highly diagnostic ear bone partly fills the ghost lineage mentioned above and provides insights on the shifts to freshwater environments by various odontocete clades, a phenomenon probably underestimated due to the lack of fossils from the freshwater sedimentary record, and probably not just limited to extant clades of freshwater odontocetes (Fordyce, 1983).
publishDate 2013
dc.date.none.fl_str_mv 2013-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/2861
Bianucci, Giovanni; Lambert, Oliver; Salas Gismondi, Rodolfo; Tejada, Julia; Pujos, François Roger Francis; et al.; A Miocene relative of the Ganges River dolphin from the amazonian basin; Soc Vertebrate Paleontology; Journal Of Vertebrate Paleontology; 33; 3; 5-2013; 741-745
0272-4634
url http://hdl.handle.net/11336/2861
identifier_str_mv Bianucci, Giovanni; Lambert, Oliver; Salas Gismondi, Rodolfo; Tejada, Julia; Pujos, François Roger Francis; et al.; A Miocene relative of the Ganges River dolphin from the amazonian basin; Soc Vertebrate Paleontology; Journal Of Vertebrate Paleontology; 33; 3; 5-2013; 741-745
0272-4634
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/02724634.2013.734888
info:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2013.734888
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Soc Vertebrate Paleontology
publisher.none.fl_str_mv Soc Vertebrate Paleontology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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