Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae)
- Autores
- Tambussi, Claudia Patricia; De Mendoza, Ricardo Santiago; Degrange, Federico Javier; Picasso, Mariana Beatriz Julieta
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background: Andalgalornis steulleti from the upper Miocene-lower Pliocene (≈6 million years ago) of Argentina is a medium-sized patagornithine phorusrhacid. It was a member of the predominantly South American radiation of 'terror birds' (Phorusrhacidae) that were apex predators throughout much of the Cenozoic. A previous biomechanical study suggests that the skull would be prepared to make sudden movements in the sagittal plane to subdue prey. Methodology/Principal Findings: We analyze the flexion patterns of the neck of Andalgalornis based on the neck vertebrae morphology and biometrics. The transitional cervical vertebrae 5th and 9th clearly separate regions 1-2 and 2-3 respectively. Bifurcate neural spines are developed in the cervical vertebrae 7th to 12th suggesting the presence of a very intricate ligamentary system and of a very well developed epaxial musculature. The presence of the lig. elasticum interespinale is inferred. High neural spines of R3 suggest that this region concentrates the major stresses during downstrokes. Conclusions/Significance: The musculoskeletal system of Andalgalornis seems to be prepared (1) to support a particularly big head during normal stance, and (2) to help the neck (and the head) rising after the maximum ventroflexion during a strike. The study herein is the first interpretation of the potential performance of the neck of Andalgalornis in its entirety and we considered this an important starting point to understand and reconstruct the flexion pattern of other phorusrhacids from which the neck is unknown.
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Andalgalornis
Aves
Anatomía
ave del terror
Cuello
Especies en Extinción - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/29545
Ver los metadatos del registro completo
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Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae)Tambussi, Claudia PatriciaDe Mendoza, Ricardo SantiagoDegrange, Federico JavierPicasso, Mariana Beatriz JulietaCiencias NaturalesAndalgalornisAvesAnatomíaave del terrorCuelloEspecies en ExtinciónBackground: Andalgalornis steulleti from the upper Miocene-lower Pliocene (≈6 million years ago) of Argentina is a medium-sized patagornithine phorusrhacid. It was a member of the predominantly South American radiation of 'terror birds' (Phorusrhacidae) that were apex predators throughout much of the Cenozoic. A previous biomechanical study suggests that the skull would be prepared to make sudden movements in the sagittal plane to subdue prey. Methodology/Principal Findings: We analyze the flexion patterns of the neck of Andalgalornis based on the neck vertebrae morphology and biometrics. The transitional cervical vertebrae 5th and 9th clearly separate regions 1-2 and 2-3 respectively. Bifurcate neural spines are developed in the cervical vertebrae 7th to 12th suggesting the presence of a very intricate ligamentary system and of a very well developed epaxial musculature. The presence of the lig. elasticum interespinale is inferred. High neural spines of R3 suggest that this region concentrates the major stresses during downstrokes. Conclusions/Significance: The musculoskeletal system of Andalgalornis seems to be prepared (1) to support a particularly big head during normal stance, and (2) to help the neck (and the head) rising after the maximum ventroflexion during a strike. The study herein is the first interpretation of the potential performance of the neck of Andalgalornis in its entirety and we considered this an important starting point to understand and reconstruct the flexion pattern of other phorusrhacids from which the neck is unknown.Facultad de Ciencias Naturales y Museo2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/29545enginfo:eu-repo/semantics/altIdentifier/url/http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0037701info:eu-repo/semantics/altIdentifier/issn/1932-6203info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0037701info:eu-repo/semantics/altIdentifier/pmid/22662194info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar/Creative Commons Attribution 2.5 Argentina (CC BY 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T10:57:12Zoai:sedici.unlp.edu.ar:10915/29545Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 10:57:13.072SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
title |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
spellingShingle |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) Tambussi, Claudia Patricia Ciencias Naturales Andalgalornis Aves Anatomía ave del terror Cuello Especies en Extinción |
title_short |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
title_full |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
title_fullStr |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
title_full_unstemmed |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
title_sort |
Flexibility along the neck of the Neogene terror bird <i>Andalgalornis steulleti</i> (Aves, Phorusrhacidae) |
dc.creator.none.fl_str_mv |
Tambussi, Claudia Patricia De Mendoza, Ricardo Santiago Degrange, Federico Javier Picasso, Mariana Beatriz Julieta |
author |
Tambussi, Claudia Patricia |
author_facet |
Tambussi, Claudia Patricia De Mendoza, Ricardo Santiago Degrange, Federico Javier Picasso, Mariana Beatriz Julieta |
author_role |
author |
author2 |
De Mendoza, Ricardo Santiago Degrange, Federico Javier Picasso, Mariana Beatriz Julieta |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Andalgalornis Aves Anatomía ave del terror Cuello Especies en Extinción |
topic |
Ciencias Naturales Andalgalornis Aves Anatomía ave del terror Cuello Especies en Extinción |
dc.description.none.fl_txt_mv |
Background: Andalgalornis steulleti from the upper Miocene-lower Pliocene (≈6 million years ago) of Argentina is a medium-sized patagornithine phorusrhacid. It was a member of the predominantly South American radiation of 'terror birds' (Phorusrhacidae) that were apex predators throughout much of the Cenozoic. A previous biomechanical study suggests that the skull would be prepared to make sudden movements in the sagittal plane to subdue prey. Methodology/Principal Findings: We analyze the flexion patterns of the neck of Andalgalornis based on the neck vertebrae morphology and biometrics. The transitional cervical vertebrae 5th and 9th clearly separate regions 1-2 and 2-3 respectively. Bifurcate neural spines are developed in the cervical vertebrae 7th to 12th suggesting the presence of a very intricate ligamentary system and of a very well developed epaxial musculature. The presence of the lig. elasticum interespinale is inferred. High neural spines of R3 suggest that this region concentrates the major stresses during downstrokes. Conclusions/Significance: The musculoskeletal system of Andalgalornis seems to be prepared (1) to support a particularly big head during normal stance, and (2) to help the neck (and the head) rising after the maximum ventroflexion during a strike. The study herein is the first interpretation of the potential performance of the neck of Andalgalornis in its entirety and we considered this an important starting point to understand and reconstruct the flexion pattern of other phorusrhacids from which the neck is unknown. Facultad de Ciencias Naturales y Museo |
description |
Background: Andalgalornis steulleti from the upper Miocene-lower Pliocene (≈6 million years ago) of Argentina is a medium-sized patagornithine phorusrhacid. It was a member of the predominantly South American radiation of 'terror birds' (Phorusrhacidae) that were apex predators throughout much of the Cenozoic. A previous biomechanical study suggests that the skull would be prepared to make sudden movements in the sagittal plane to subdue prey. Methodology/Principal Findings: We analyze the flexion patterns of the neck of Andalgalornis based on the neck vertebrae morphology and biometrics. The transitional cervical vertebrae 5th and 9th clearly separate regions 1-2 and 2-3 respectively. Bifurcate neural spines are developed in the cervical vertebrae 7th to 12th suggesting the presence of a very intricate ligamentary system and of a very well developed epaxial musculature. The presence of the lig. elasticum interespinale is inferred. High neural spines of R3 suggest that this region concentrates the major stresses during downstrokes. Conclusions/Significance: The musculoskeletal system of Andalgalornis seems to be prepared (1) to support a particularly big head during normal stance, and (2) to help the neck (and the head) rising after the maximum ventroflexion during a strike. The study herein is the first interpretation of the potential performance of the neck of Andalgalornis in its entirety and we considered this an important starting point to understand and reconstruct the flexion pattern of other phorusrhacids from which the neck is unknown. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/29545 |
url |
http://sedici.unlp.edu.ar/handle/10915/29545 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0037701 info:eu-repo/semantics/altIdentifier/issn/1932-6203 info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0037701 info:eu-repo/semantics/altIdentifier/pmid/22662194 |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar/ Creative Commons Attribution 2.5 Argentina (CC BY 2.5) |
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openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/2.5/ar/ Creative Commons Attribution 2.5 Argentina (CC BY 2.5) |
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