A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia

Autores
López Arbarello, Adriana; Sferco, Marta Emilia; Rauhut, Oliver Walter Mischa
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Jurassic freshwater fish faunas are still poorly known, with the only assemblage of that age known from southern South America being the Almada fauna of the Cañadón Calcáreo Formation (Oxfordian-Tithonian) of Chubut, Argentina. This fauna is composed mainly by abundant teleosts and a much rarer basal actinopterygian, originally described as Oligopleurus groeberi and currently usually placed in the genus Coccolepis. This taxon is here redescribed on the basis of the original specimens and more numerous and better preserved new material from several localities within the Cañadón Calcáreo Formation. The species shows several differences to other coccolepidid taxa, including the apomorphic presence of a sensory canal in the gular plate, and cannot be referred to a known genus. Thus, a new genus name, Condorlepis gen. nov., is proposed. The detailed anatomical description of Condorlepis gen. nov. groeberi provides further evidence for the chondrostean affinities of the Coccolepididae and their close relationships with the Acipenseriformes, since this species shows six characters that were hitherto considered to be autapomorphies of the latter clade. A comparison of the Almada fauna with other Gondwanan Jurassic freshwater fish faunas shows close similarities with the roughly contemporaneous fauna of Talbragar, Australia, which also includes an abundant basal teleost and coccolepidids. In contrast, there are marked differences with the faunas of the Early to Middle Jurassic Kota Formation of India, the Middle to Late Jurassic Stanleyville beds of the Democratic Republic of the Congo, and the probably Late Jurassic Tacuarembó Formation of Uruguay, in which basal, non-teleostean neopterygians and sarcopterygians are abundant.
Fil: López Arbarello, Adriana. Bayerische Staatssammlung Fur Palaontologie Und Geologie; Alemania
Fil: Sferco, Marta Emilia. Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Geologia. Laboratorio de Paleontologia Evolutiva de Vertebrados; Argentina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Rauhut, Oliver Walter Mischa. Bayerische Staatssammlung Fur Palaontologie Und Geologie; Alemania. Museo Paleontológico Egidio Feruglio; Argentina
Materia
NEW GENUS
CHONDROSTEI
COCCOLEPIDIDAE
PATAGONIA
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:11336/11344

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spelling A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of PatagoniaLópez Arbarello, AdrianaSferco, Marta EmiliaRauhut, Oliver Walter MischaNEW GENUSCHONDROSTEICOCCOLEPIDIDAEPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Jurassic freshwater fish faunas are still poorly known, with the only assemblage of that age known from southern South America being the Almada fauna of the Cañadón Calcáreo Formation (Oxfordian-Tithonian) of Chubut, Argentina. This fauna is composed mainly by abundant teleosts and a much rarer basal actinopterygian, originally described as Oligopleurus groeberi and currently usually placed in the genus Coccolepis. This taxon is here redescribed on the basis of the original specimens and more numerous and better preserved new material from several localities within the Cañadón Calcáreo Formation. The species shows several differences to other coccolepidid taxa, including the apomorphic presence of a sensory canal in the gular plate, and cannot be referred to a known genus. Thus, a new genus name, Condorlepis gen. nov., is proposed. The detailed anatomical description of Condorlepis gen. nov. groeberi provides further evidence for the chondrostean affinities of the Coccolepididae and their close relationships with the Acipenseriformes, since this species shows six characters that were hitherto considered to be autapomorphies of the latter clade. A comparison of the Almada fauna with other Gondwanan Jurassic freshwater fish faunas shows close similarities with the roughly contemporaneous fauna of Talbragar, Australia, which also includes an abundant basal teleost and coccolepidids. In contrast, there are marked differences with the faunas of the Early to Middle Jurassic Kota Formation of India, the Middle to Late Jurassic Stanleyville beds of the Democratic Republic of the Congo, and the probably Late Jurassic Tacuarembó Formation of Uruguay, in which basal, non-teleostean neopterygians and sarcopterygians are abundant.Fil: López Arbarello, Adriana. Bayerische Staatssammlung Fur Palaontologie Und Geologie; AlemaniaFil: Sferco, Marta Emilia. Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Geologia. Laboratorio de Paleontologia Evolutiva de Vertebrados; Argentina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Rauhut, Oliver Walter Mischa. Bayerische Staatssammlung Fur Palaontologie Und Geologie; Alemania. Museo Paleontológico Egidio Feruglio; ArgentinaCoquina Press2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11344López Arbarello, Adriana; Sferco, Marta Emilia; Rauhut, Oliver Walter Mischa; A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia; Coquina Press; Palaeontologia Electronica; 16; 1; 2-2013; 1-231094-80741532-3056enginfo:eu-repo/semantics/altIdentifier/url/http://palaeo-electronica.org/content/2013/397-new-coccolepidid-from-patagoniainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:01Zoai:ri.conicet.gov.ar:11336/11344instacron: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:34982025-10-15 14:38:02.108CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
title A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
spellingShingle A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
López Arbarello, Adriana
NEW GENUS
CHONDROSTEI
COCCOLEPIDIDAE
PATAGONIA
title_short A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
title_full A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
title_fullStr A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
title_full_unstemmed A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
title_sort A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia
dc.creator.none.fl_str_mv López Arbarello, Adriana
Sferco, Marta Emilia
Rauhut, Oliver Walter Mischa
author López Arbarello, Adriana
author_facet López Arbarello, Adriana
Sferco, Marta Emilia
Rauhut, Oliver Walter Mischa
author_role author
author2 Sferco, Marta Emilia
Rauhut, Oliver Walter Mischa
author2_role author
author
dc.subject.none.fl_str_mv NEW GENUS
CHONDROSTEI
COCCOLEPIDIDAE
PATAGONIA
topic NEW GENUS
CHONDROSTEI
COCCOLEPIDIDAE
PATAGONIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Jurassic freshwater fish faunas are still poorly known, with the only assemblage of that age known from southern South America being the Almada fauna of the Cañadón Calcáreo Formation (Oxfordian-Tithonian) of Chubut, Argentina. This fauna is composed mainly by abundant teleosts and a much rarer basal actinopterygian, originally described as Oligopleurus groeberi and currently usually placed in the genus Coccolepis. This taxon is here redescribed on the basis of the original specimens and more numerous and better preserved new material from several localities within the Cañadón Calcáreo Formation. The species shows several differences to other coccolepidid taxa, including the apomorphic presence of a sensory canal in the gular plate, and cannot be referred to a known genus. Thus, a new genus name, Condorlepis gen. nov., is proposed. The detailed anatomical description of Condorlepis gen. nov. groeberi provides further evidence for the chondrostean affinities of the Coccolepididae and their close relationships with the Acipenseriformes, since this species shows six characters that were hitherto considered to be autapomorphies of the latter clade. A comparison of the Almada fauna with other Gondwanan Jurassic freshwater fish faunas shows close similarities with the roughly contemporaneous fauna of Talbragar, Australia, which also includes an abundant basal teleost and coccolepidids. In contrast, there are marked differences with the faunas of the Early to Middle Jurassic Kota Formation of India, the Middle to Late Jurassic Stanleyville beds of the Democratic Republic of the Congo, and the probably Late Jurassic Tacuarembó Formation of Uruguay, in which basal, non-teleostean neopterygians and sarcopterygians are abundant.
Fil: López Arbarello, Adriana. Bayerische Staatssammlung Fur Palaontologie Und Geologie; Alemania
Fil: Sferco, Marta Emilia. Universidad de Buenos Aires. Facultad de Cs.exactas y Naturales. Departamento de Geologia. Laboratorio de Paleontologia Evolutiva de Vertebrados; Argentina. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Rauhut, Oliver Walter Mischa. Bayerische Staatssammlung Fur Palaontologie Und Geologie; Alemania. Museo Paleontológico Egidio Feruglio; Argentina
description Jurassic freshwater fish faunas are still poorly known, with the only assemblage of that age known from southern South America being the Almada fauna of the Cañadón Calcáreo Formation (Oxfordian-Tithonian) of Chubut, Argentina. This fauna is composed mainly by abundant teleosts and a much rarer basal actinopterygian, originally described as Oligopleurus groeberi and currently usually placed in the genus Coccolepis. This taxon is here redescribed on the basis of the original specimens and more numerous and better preserved new material from several localities within the Cañadón Calcáreo Formation. The species shows several differences to other coccolepidid taxa, including the apomorphic presence of a sensory canal in the gular plate, and cannot be referred to a known genus. Thus, a new genus name, Condorlepis gen. nov., is proposed. The detailed anatomical description of Condorlepis gen. nov. groeberi provides further evidence for the chondrostean affinities of the Coccolepididae and their close relationships with the Acipenseriformes, since this species shows six characters that were hitherto considered to be autapomorphies of the latter clade. A comparison of the Almada fauna with other Gondwanan Jurassic freshwater fish faunas shows close similarities with the roughly contemporaneous fauna of Talbragar, Australia, which also includes an abundant basal teleost and coccolepidids. In contrast, there are marked differences with the faunas of the Early to Middle Jurassic Kota Formation of India, the Middle to Late Jurassic Stanleyville beds of the Democratic Republic of the Congo, and the probably Late Jurassic Tacuarembó Formation of Uruguay, in which basal, non-teleostean neopterygians and sarcopterygians are abundant.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
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/11336/11344
López Arbarello, Adriana; Sferco, Marta Emilia; Rauhut, Oliver Walter Mischa; A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia; Coquina Press; Palaeontologia Electronica; 16; 1; 2-2013; 1-23
1094-8074
1532-3056
url http://hdl.handle.net/11336/11344
identifier_str_mv López Arbarello, Adriana; Sferco, Marta Emilia; Rauhut, Oliver Walter Mischa; A new genus of coccolepidid fishes (Actinopterygii, Chondrostei) from the continental jurassic of Patagonia; Coquina Press; Palaeontologia Electronica; 16; 1; 2-2013; 1-23
1094-8074
1532-3056
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://palaeo-electronica.org/content/2013/397-new-coccolepidid-from-patagonia
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 Coquina Press
publisher.none.fl_str_mv Coquina Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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