A new dolphin from the early Miocene of Patagonia, Argentina: Insights into the evolution of Platanistoidea in the Southern Hemisphere

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dc.creatorMariana Viglino
dc.creatorMónica R. Buono
dc.creatorCarolina S. Gutstein
dc.creatorMario Alberto Cozzuol
dc.creatorJosé I. Cuitiño
dc.date.accessioned2024-08-07T22:03:48Z
dc.date.accessioned2025-09-09T00:51:45Z
dc.date.available2024-08-07T22:03:48Z
dc.date.issued2018
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doi10.4202/app.00441.2017
dc.identifier.issn1732-2421
dc.identifier.urihttps://hdl.handle.net/1843/73345
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofActa Palaeontologica Polonica
dc.rightsAcesso Aberto
dc.subjectGolfinho (Mamífero aquático)
dc.subjectPaleontologia - Mioceno
dc.subjectArgentina
dc.subjectEvolução
dc.subject.otherPatagonia
dc.subject.otherMioceno inferior
dc.subject.otherPlatanistoidea
dc.titleA new dolphin from the early Miocene of Patagonia, Argentina: Insights into the evolution of Platanistoidea in the Southern Hemisphere
dc.typeArtigo de periódico
local.citation.epage277
local.citation.issue2
local.citation.spage261
local.citation.volume63
local.description.resumoThe contents of the superfamily Platanistoidea, an early-diverging lineage comprising extinct species and a single extant representative of South Asian river dolphin (Platanista gangetica), remain controversial. We describe here a partial skull and associated tympano-periotic bones identified as a new genus and species, Aondelphis talen gen. et sp. nov., collected in the lower levels of the Gaiman Formation (early Miocene), in Patagonia (Chubut Province, Argentina). Aondelphis is the first Patagonian platanistoid species named in almost a century. Phylogenetic analyses suggest Aondelphis talen gen. et sp. nov. and a taxon from New Zealand (cf. Papahu ZMT-73) are basal Platanistoidea sensu lato. Unambiguous synapomorphies related to the ear bones allowed us to determine its phylogenetic position. Aondelphis talen markedly differs from the other well-known early Miocene Patagonian platanistoid Notocetus, suggesting the coexistence of at least two different morphotypes that may have occupied different ecological niches at that time. The putative close relationship with a species from New Zealand indicates there was a rapid diversification and widespread distribution of the group in the Southern Hemisphere during the early Miocene. The description of new species and revision of historical records of Patagonian platanistoids can help shedding light on cetacean assemblages of the Patagonian sea during this epoch.
local.publisher.countryBrasil
local.publisher.departmentICB - DEPARTAMENTO DE ZOOLOGIA
local.publisher.initialsUFMG
local.url.externahttps://www.app.pan.pl/article/item/app004412017.html

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