A dromaeosaur from the Maastrichtian of James Ross Island and the Late
- Autores
- Case, J. A.; Martin, J. E.; Reguero, Marcelo Alfredo
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The recovery of material of a small theropod from the Early Maastrichtian, Cape Lamb Member of the Snow Hill Island Formation is an unusual occurrence from primarily marine sediments. The pedal morphology of the specimen that includes a Metatarsal II with a lateral expansion caudal to Metatarsal III, a third metatarsal that is proximally narrow and distally wide, a Metatarsal III with a distal end that is incipiently ginglymoidal and a second pedal digit with sickle-like ungual are all diagnostic of a theropod that belongs to the family of predatory dinosaurs, the Dromaeosauridae. Yet this Antarctic dromaeosaur retains plesiomorphic features in its ankle and foot morphology. As new dromaeosaur species are being recovered from the mid-Cretaceous of South America and the retention of primitive characters in the Antarctic dromaeosaur, a new biogeographic hypothesis on dromaeosaur distribution has been generated. Gondwanan dromaeosaurs are not North America immigrants into South America and Antarctica; rather they are the relicts of a cosmopolitan dromaeosaur distribution, which has been separated by the vicariant break up of Pangea and created an endemic clade of dromaeosaurs in Gondwana.
Fil: Case, J. A.. Eastern Washington University; Estados Unidos
Fil: Martin, J. E.. South Dakota School of Mines & Technology; Estados Unidos
Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina - Materia
-
Antarctica
James Ross Island
Dinosaur
Late Cretaceous - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/241818
Ver los metadatos del registro completo
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A dromaeosaur from the Maastrichtian of James Ross Island and the LateCase, J. A.Martin, J. E.Reguero, Marcelo AlfredoAntarcticaJames Ross IslandDinosaurLate Cretaceoushttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The recovery of material of a small theropod from the Early Maastrichtian, Cape Lamb Member of the Snow Hill Island Formation is an unusual occurrence from primarily marine sediments. The pedal morphology of the specimen that includes a Metatarsal II with a lateral expansion caudal to Metatarsal III, a third metatarsal that is proximally narrow and distally wide, a Metatarsal III with a distal end that is incipiently ginglymoidal and a second pedal digit with sickle-like ungual are all diagnostic of a theropod that belongs to the family of predatory dinosaurs, the Dromaeosauridae. Yet this Antarctic dromaeosaur retains plesiomorphic features in its ankle and foot morphology. As new dromaeosaur species are being recovered from the mid-Cretaceous of South America and the retention of primitive characters in the Antarctic dromaeosaur, a new biogeographic hypothesis on dromaeosaur distribution has been generated. Gondwanan dromaeosaurs are not North America immigrants into South America and Antarctica; rather they are the relicts of a cosmopolitan dromaeosaur distribution, which has been separated by the vicariant break up of Pangea and created an endemic clade of dromaeosaurs in Gondwana.Fil: Case, J. A.. Eastern Washington University; Estados UnidosFil: Martin, J. E.. South Dakota School of Mines & Technology; Estados UnidosFil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; ArgentinaUS Geological Society2007-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241818Case, J. A.; Martin, J. E.; Reguero, Marcelo Alfredo; A dromaeosaur from the Maastrichtian of James Ross Island and the Late; US Geological Society; U.S. Geological Survey and The National Academies; 083; 3-2007; 1-40701-8738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.usgs.gov/publication/ofr20071047SRP083info:eu-repo/semantics/altIdentifier/doi/10.3133/ofr20071047SRP083info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:32Zoai:ri.conicet.gov.ar:11336/241818instacron: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:34982025-09-03 09:54:33.271CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
title |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
spellingShingle |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late Case, J. A. Antarctica James Ross Island Dinosaur Late Cretaceous |
title_short |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
title_full |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
title_fullStr |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
title_full_unstemmed |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
title_sort |
A dromaeosaur from the Maastrichtian of James Ross Island and the Late |
dc.creator.none.fl_str_mv |
Case, J. A. Martin, J. E. Reguero, Marcelo Alfredo |
author |
Case, J. A. |
author_facet |
Case, J. A. Martin, J. E. Reguero, Marcelo Alfredo |
author_role |
author |
author2 |
Martin, J. E. Reguero, Marcelo Alfredo |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Antarctica James Ross Island Dinosaur Late Cretaceous |
topic |
Antarctica James Ross Island Dinosaur Late Cretaceous |
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 recovery of material of a small theropod from the Early Maastrichtian, Cape Lamb Member of the Snow Hill Island Formation is an unusual occurrence from primarily marine sediments. The pedal morphology of the specimen that includes a Metatarsal II with a lateral expansion caudal to Metatarsal III, a third metatarsal that is proximally narrow and distally wide, a Metatarsal III with a distal end that is incipiently ginglymoidal and a second pedal digit with sickle-like ungual are all diagnostic of a theropod that belongs to the family of predatory dinosaurs, the Dromaeosauridae. Yet this Antarctic dromaeosaur retains plesiomorphic features in its ankle and foot morphology. As new dromaeosaur species are being recovered from the mid-Cretaceous of South America and the retention of primitive characters in the Antarctic dromaeosaur, a new biogeographic hypothesis on dromaeosaur distribution has been generated. Gondwanan dromaeosaurs are not North America immigrants into South America and Antarctica; rather they are the relicts of a cosmopolitan dromaeosaur distribution, which has been separated by the vicariant break up of Pangea and created an endemic clade of dromaeosaurs in Gondwana. Fil: Case, J. A.. Eastern Washington University; Estados Unidos Fil: Martin, J. E.. South Dakota School of Mines & Technology; Estados Unidos Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina |
description |
The recovery of material of a small theropod from the Early Maastrichtian, Cape Lamb Member of the Snow Hill Island Formation is an unusual occurrence from primarily marine sediments. The pedal morphology of the specimen that includes a Metatarsal II with a lateral expansion caudal to Metatarsal III, a third metatarsal that is proximally narrow and distally wide, a Metatarsal III with a distal end that is incipiently ginglymoidal and a second pedal digit with sickle-like ungual are all diagnostic of a theropod that belongs to the family of predatory dinosaurs, the Dromaeosauridae. Yet this Antarctic dromaeosaur retains plesiomorphic features in its ankle and foot morphology. As new dromaeosaur species are being recovered from the mid-Cretaceous of South America and the retention of primitive characters in the Antarctic dromaeosaur, a new biogeographic hypothesis on dromaeosaur distribution has been generated. Gondwanan dromaeosaurs are not North America immigrants into South America and Antarctica; rather they are the relicts of a cosmopolitan dromaeosaur distribution, which has been separated by the vicariant break up of Pangea and created an endemic clade of dromaeosaurs in Gondwana. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-03 |
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/11336/241818 Case, J. A.; Martin, J. E.; Reguero, Marcelo Alfredo; A dromaeosaur from the Maastrichtian of James Ross Island and the Late; US Geological Society; U.S. Geological Survey and The National Academies; 083; 3-2007; 1-4 0701-8738 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/241818 |
identifier_str_mv |
Case, J. A.; Martin, J. E.; Reguero, Marcelo Alfredo; A dromaeosaur from the Maastrichtian of James Ross Island and the Late; US Geological Society; U.S. Geological Survey and The National Academies; 083; 3-2007; 1-4 0701-8738 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://pubs.usgs.gov/publication/ofr20071047SRP083 info:eu-repo/semantics/altIdentifier/doi/10.3133/ofr20071047SRP083 |
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 |
US Geological Society |
publisher.none.fl_str_mv |
US Geological Society |
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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1842269291940937728 |
score |
13.13397 |