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dc.contributor.author
Arratia, Gloria
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dc.contributor.author
Scasso, Roberto Adrian
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dc.contributor.author
Kiessling, Wolfgang
dc.date.available
2019-12-05T19:27:04Z
dc.date.issued
2004-12
dc.identifier.citation
Arratia, Gloria; Scasso, Roberto Adrian; Kiessling, Wolfgang; Late Jurassic fishes from longing gap, Antarctic Peninsula; Taylor & Francis; Journal of Vertebrate Paleontology; 24; 1; 12-2004; 41-55
dc.identifier.issn
0272-4634
dc.identifier.uri
http://hdl.handle.net/11336/91532
dc.description.abstract
Few records of Late Jurassic fishes have been reported previously from Antarctica. They include an indeterminate teleost from the Ameghino (Nordenskjöld) Formation at Longing Gap and two incomplete aspidorhyn-chiforms from James Ross Island, all of presumed Late Jurassic age. New fish material recently recovered in the Upper Jurassic of Longing Gap is described. The new material consists of one piece of body squamation, which, based on the structure of the scales, corresponds to a new genus and species (Ameghinichthys antarcticus gen. et sp. nov.) of an indeterminate actinopterygian family; one aspidorhynchiform identified as Vinctifer sp. due to the structure and distribution of the scales; and numerous specimens of a new ichthyodectiform, Antarctithrissops seymouri gen. et sp. nov. This new genus differs from European ichthyodectiforms in the shape of the preopercle, the presence of long sensory preopercular branches almost reaching the posterior margin of the bone, and the uncommon structure of the scales, with a fine layer of bone obscuring the circuli. The presence of Vinctifer in the Antarctic is consistent with its other Gondwanan records. The Ichthyodectiformes, previously known from four European genera, extends the distribution of the group to the southernmost part of the Southern Hemisphere during the Late Jurassic. In contrast to most non-teleostean fishes, the known Late Jurassic teleosts apparently are species endemic to restricted areas in the Southern Hemisphere.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Late Jurassic fishes from longing gap, Antarctic Peninsula
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-15T14:20:32Z
dc.journal.volume
24
dc.journal.number
1
dc.journal.pagination
41-55
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Arratia, Gloria. Staatliches Museum fur Naturkunde Stuttgart; Alemania
dc.description.fil
Fil: Scasso, Roberto Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.description.fil
Fil: Kiessling, Wolfgang. Staatliches Museum fur Naturkunde Stuttgart; Alemania
dc.journal.title
Journal of Vertebrate Paleontology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1671/1952-4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1671/1952-4
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