Mostrar el registro sencillo del ítem
dc.contributor.author
Buono, Mónica Romina
dc.contributor.author
Fernández, Marta Susana
dc.contributor.author
Cozzuol, Mario Alberto
dc.contributor.author
Cuitiño, José Ignacio
dc.contributor.author
Fitzgerald, Erich M. G.
dc.date.available
2018-06-22T20:41:31Z
dc.date.issued
2017-12
dc.identifier.citation
Buono, Mónica Romina; Fernández, Marta Susana; Cozzuol, Mario Alberto; Cuitiño, José Ignacio; Fitzgerald, Erich M. G.; The early Miocene balaenid Morenocetus parvus from Patagonia (Argentina) and the evolution of right whales; PeerJ; PeerJ; 2017; 12; 12-2017; 1-48
dc.identifier.issn
2167-8359
dc.identifier.uri
http://hdl.handle.net/11336/49792
dc.description.abstract
Balaenidae (right and bowhead whales) are a key group in understanding baleen whale evolution, because they are the oldest surviving lineage of crown Mysticeti, with a fossil record that dates back ~20 million years. However, this record is mostly Pliocene and younger, with most of the Miocene history of the clade remaining practically unknown. The earliest recognized balaenid is the early Miocene Morenocetus parvus Cabrera, 1926 from Argentina. M. parvus was originally briefly described from two incomplete crania, a mandible and some cervical vertebrae collected from the lower Miocene Gaiman Formation of Patagonia. Since then it has not been revised, thus remaining a frequently cited yet enigmatic fossil cetacean with great potential for shedding light on the early history of crown Mysticeti. Here we provide a detailed morphological description of this taxon and revisit its phylogenetic position. The phylogenetic analysis recovered the middle Miocene Peripolocetus as the earliest diverging balaenid, and Morenocetus as the sister taxon of all other balaenids. The analysis of cranial and periotic morphology of Morenocetus suggest that some of the specialized morphological traits of modern balaenids were acquired by the early Miocene and have remained essentially unchanged up to the present. Throughout balaenid evolution, morphological changes in skull arching and ventral displacement of the orbits appear to be coupled and functionally linked to mitigating a reduction of the field of vision. The body length ofMorenocetus and other extinct balaenids was estimated and the evolution of body size in Balaenidae was reconstructed. Optimization of body length on our phylogeny of Balaenidae suggests that the primitive condition was a relatively small body length represented by Morenocetus, and that gigantism has been acquired independently at least twice (in Balaena mysticetus and Eubalaena spp.), with the earliest occurrence of this trait in the late Miocene-early Pliocene as represented by Eubalaena shinshuensis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
PeerJ
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Balaenidae
dc.subject
Evolution
dc.subject
Mysticeti
dc.subject
Neogene
dc.subject
Patagonia
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The early Miocene balaenid Morenocetus parvus from Patagonia (Argentina) and the evolution of right whales
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-22T15:05:33Z
dc.journal.volume
2017
dc.journal.number
12
dc.journal.pagination
1-48
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
dc.description.fil
Fil: Fernández, Marta Susana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Cozzuol, Mario Alberto. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
dc.description.fil
Fil: Fitzgerald, Erich M. G.. British Museum (natural History); Reino Unido. National Museum of Natural History; Estados Unidos
dc.journal.title
PeerJ
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.7717/peerj.4148
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/4148/
Archivos asociados