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dc.contributor.author
Azpelicueta, María De Las Mercedes
dc.contributor.author
Cione, Alberto Luis
dc.date.available
2023-05-29T13:57:43Z
dc.date.issued
2011-03
dc.identifier.citation
Azpelicueta, María De Las Mercedes; Cione, Alberto Luis; Redescription of the Eocene catfish Bachmannia chubutensis (Teleostei: Bachmanniidae) of southern South America; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 31; 2; 3-2011; 258-269
dc.identifier.issn
0272-4634
dc.identifier.uri
http://hdl.handle.net/11336/198771
dc.description.abstract
The Siluriformes constitutes an important monophyletic ostariophysan group of mainly freshwater fishes that occurs in almost all continents. They are extremely abundant and diverse in South America, where the oldest otophysans and siluriforms occur. We restudied two putative catfish species from the early Eocene lacustrine Tufolitas Laguna del Hunco of northwestern Patagonia, Argentina, concluding that Arius argentinus Dolgopol, 1941, is a junior synonym of Bachmannia chubutensis Dolgopol, 1941. Phylogenetic analyses were performed to show the relationships of B. chubutensis, which appears as the sister group of Diplomystes. Bachmannia chubutensis is one of the most primitive catfishes known and we based on it a new family. The family is clearly diagnosed by the presence of a anterior ventrolateral expansion of cleithrum, short maxilla with two rows of teeth, double-headed autopalatine, accessory tooth plates, very huge teeth, supraoccipital process long and acute, first and fifth vertebrae not joined to complex vertebra, neural arch of fifth and sixth vertebrae very well developed, enlarged supraneural 5, suture between ceratohyal and epihyal without interdigitations, suture between contralateral cleithra and coracoids without interdigitations, six hypurals. Individuals of B. chubutensis inhabited lakes and were preserved into fine-grained, laminated fall-out and reworked pyroclastic debris inside a caldera.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society of Vertebrate Paleontology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ACTINOPTERYGII
dc.subject
SILURIFORMES
dc.subject
EOCENO
dc.subject
ARGENTINA
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
Otras Ciencias Naturales y Exactas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Redescription of the Eocene catfish Bachmannia chubutensis (Teleostei: Bachmanniidae) of southern South America
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-04-10T10:18:22Z
dc.journal.volume
31
dc.journal.number
2
dc.journal.pagination
258-269
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Azpelicueta, María De Las Mercedes. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina
dc.description.fil
Fil: Cione, Alberto Luis. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.journal.title
Journal of Vertebrate Paleontology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/02724634.2011.550351
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1080/02724634.2011.550351
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