A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus

Autores
Engelbrecht, Andrea; Mörs, Thomas; Reguero, Marcelo Alfredo; Kriwet, Jürgen
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The highly fossiliferous Eocene deposits of the Antarctic Peninsula are among the most productive sites for fossil remains in the Southern Hemisphere and offer rare insights into high-latitude faunas during the Palaeogene. Chondrichthyans, which are represented by abundant isolated remains, seemingly dominate the marine assemblages. Eocene Antarctic sawsharks have only been known from few isolated rostral spines up to now, that were assigned to Pristiophorus lanceolatus. Here, we present the first oral teeth of a sawshark from the Eocene of Seymour Island and a re-evaluation of previously described Pristiophorus remains from Gondwana consisting exclusively of rostral spines. The holotype of Pristiophorus lanceolatus represents a single, abraded and insufficiently illustrated spine from the Oligocene of New Zealand. All other Cenozoic rostral spines assigned to this species are morphologically very indistinct and closely resemble those of living taxa. Consequently, we regard this species as dubious and introduce a new species, Pristiophorus laevis, based on oral teeth. The combination of dental characteristics of the new species makes it unique compared to all other described species based on oral teeth. Rostral spines from the Eocene of Seymour Island are assigned to this new species whereas those from other Cenozoic Gondwana localities remain ambiguous.
Fil: Engelbrecht, Andrea. Universidad de Viena; Austria
Fil: Mörs, Thomas. Swedish Museum of Natural History; Suecia
Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Kriwet, Jürgen. Universidad de Viena; Austria
Materia
New Taxon
Palaeogene
Pristiophoridae
Seymour Island
Southern Ocean
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:11336/48512
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatusEngelbrecht, AndreaMörs, ThomasReguero, Marcelo AlfredoKriwet, JürgenNew TaxonPalaeogenePristiophoridaeSeymour IslandSouthern Oceanhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The highly fossiliferous Eocene deposits of the Antarctic Peninsula are among the most productive sites for fossil remains in the Southern Hemisphere and offer rare insights into high-latitude faunas during the Palaeogene. Chondrichthyans, which are represented by abundant isolated remains, seemingly dominate the marine assemblages. Eocene Antarctic sawsharks have only been known from few isolated rostral spines up to now, that were assigned to Pristiophorus lanceolatus. Here, we present the first oral teeth of a sawshark from the Eocene of Seymour Island and a re-evaluation of previously described Pristiophorus remains from Gondwana consisting exclusively of rostral spines. The holotype of Pristiophorus lanceolatus represents a single, abraded and insufficiently illustrated spine from the Oligocene of New Zealand. All other Cenozoic rostral spines assigned to this species are morphologically very indistinct and closely resemble those of living taxa. Consequently, we regard this species as dubious and introduce a new species, Pristiophorus laevis, based on oral teeth. The combination of dental characteristics of the new species makes it unique compared to all other described species based on oral teeth. Rostral spines from the Eocene of Seymour Island are assigned to this new species whereas those from other Cenozoic Gondwana localities remain ambiguous.Fil: Engelbrecht, Andrea. Universidad de Viena; AustriaFil: Mörs, Thomas. Swedish Museum of Natural History; SueciaFil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaFil: Kriwet, Jürgen. Universidad de Viena; AustriaTaylor and Francis Ltd.2016-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/48512Engelbrecht, Andrea; Mörs, Thomas; Reguero, Marcelo Alfredo; Kriwet, Jürgen; A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus; Taylor and Francis Ltd.; Historical Biology; 29; 6; 11-2016; 841-8531029-2381CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/08912963.2016.1252761info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/08912963.2016.1252761info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:49:29Zoai:ri.conicet.gov.ar:11336/48512instacron: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:34982025-09-29 09:49:29.555CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
title A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
spellingShingle A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
Engelbrecht, Andrea
New Taxon
Palaeogene
Pristiophoridae
Seymour Island
Southern Ocean
title_short A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
title_full A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
title_fullStr A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
title_full_unstemmed A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
title_sort A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus
dc.creator.none.fl_str_mv Engelbrecht, Andrea
Mörs, Thomas
Reguero, Marcelo Alfredo
Kriwet, Jürgen
author Engelbrecht, Andrea
author_facet Engelbrecht, Andrea
Mörs, Thomas
Reguero, Marcelo Alfredo
Kriwet, Jürgen
author_role author
author2 Mörs, Thomas
Reguero, Marcelo Alfredo
Kriwet, Jürgen
author2_role author
author
author
dc.subject.none.fl_str_mv New Taxon
Palaeogene
Pristiophoridae
Seymour Island
Southern Ocean
topic New Taxon
Palaeogene
Pristiophoridae
Seymour Island
Southern Ocean
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The highly fossiliferous Eocene deposits of the Antarctic Peninsula are among the most productive sites for fossil remains in the Southern Hemisphere and offer rare insights into high-latitude faunas during the Palaeogene. Chondrichthyans, which are represented by abundant isolated remains, seemingly dominate the marine assemblages. Eocene Antarctic sawsharks have only been known from few isolated rostral spines up to now, that were assigned to Pristiophorus lanceolatus. Here, we present the first oral teeth of a sawshark from the Eocene of Seymour Island and a re-evaluation of previously described Pristiophorus remains from Gondwana consisting exclusively of rostral spines. The holotype of Pristiophorus lanceolatus represents a single, abraded and insufficiently illustrated spine from the Oligocene of New Zealand. All other Cenozoic rostral spines assigned to this species are morphologically very indistinct and closely resemble those of living taxa. Consequently, we regard this species as dubious and introduce a new species, Pristiophorus laevis, based on oral teeth. The combination of dental characteristics of the new species makes it unique compared to all other described species based on oral teeth. Rostral spines from the Eocene of Seymour Island are assigned to this new species whereas those from other Cenozoic Gondwana localities remain ambiguous.
Fil: Engelbrecht, Andrea. Universidad de Viena; Austria
Fil: Mörs, Thomas. Swedish Museum of Natural History; Suecia
Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Kriwet, Jürgen. Universidad de Viena; Austria
description The highly fossiliferous Eocene deposits of the Antarctic Peninsula are among the most productive sites for fossil remains in the Southern Hemisphere and offer rare insights into high-latitude faunas during the Palaeogene. Chondrichthyans, which are represented by abundant isolated remains, seemingly dominate the marine assemblages. Eocene Antarctic sawsharks have only been known from few isolated rostral spines up to now, that were assigned to Pristiophorus lanceolatus. Here, we present the first oral teeth of a sawshark from the Eocene of Seymour Island and a re-evaluation of previously described Pristiophorus remains from Gondwana consisting exclusively of rostral spines. The holotype of Pristiophorus lanceolatus represents a single, abraded and insufficiently illustrated spine from the Oligocene of New Zealand. All other Cenozoic rostral spines assigned to this species are morphologically very indistinct and closely resemble those of living taxa. Consequently, we regard this species as dubious and introduce a new species, Pristiophorus laevis, based on oral teeth. The combination of dental characteristics of the new species makes it unique compared to all other described species based on oral teeth. Rostral spines from the Eocene of Seymour Island are assigned to this new species whereas those from other Cenozoic Gondwana localities remain ambiguous.
publishDate 2016
dc.date.none.fl_str_mv 2016-11
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/11336/48512
Engelbrecht, Andrea; Mörs, Thomas; Reguero, Marcelo Alfredo; Kriwet, Jürgen; A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus; Taylor and Francis Ltd.; Historical Biology; 29; 6; 11-2016; 841-853
1029-2381
CONICET Digital
CONICET
url http://hdl.handle.net/11336/48512
identifier_str_mv Engelbrecht, Andrea; Mörs, Thomas; Reguero, Marcelo Alfredo; Kriwet, Jürgen; A new sawshark, Pristiophorus laevis , from the Eocene of Antarctica with comments on Pristiophorus lanceolatus; Taylor and Francis Ltd.; Historical Biology; 29; 6; 11-2016; 841-853
1029-2381
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/08912963.2016.1252761
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/08912963.2016.1252761
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
application/pdf
dc.publisher.none.fl_str_mv Taylor and Francis Ltd.
publisher.none.fl_str_mv Taylor and Francis Ltd.
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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score 13.070432

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