Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?

SUMMARY: Determining kinematics of hindlimbs of theropod dinosaurs has been a challenge. Since cursorial birds are phylogenetically closest to theropod dinosaurs they are commonly used as a kinematic model of theropod dinosaur locomotion. Using a comparative biomechanical approach, we found that cur...

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Autores principales:	Grossi,Bruno, Loncomilla,Patricio, Canals,Mauricio, Ruiz-Del-Solar,Javier
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2019
Materias:	Cursorial birds Non-Avian Theropods Kinematic Models
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000200620
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spelling	oai:scielo:S0717-950220190002006202019-09-11Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?Grossi,BrunoLoncomilla,PatricioCanals,MauricioRuiz-Del-Solar,Javier Cursorial birds Non-Avian Theropods Kinematic Models SUMMARY: Determining kinematics of hindlimbs of theropod dinosaurs has been a challenge. Since cursorial birds are phylogenetically closest to theropod dinosaurs they are commonly used as a kinematic model of theropod dinosaur locomotion. Using a comparative biomechanical approach, we found that cursorial birds have a different morphology of legs than non avian theropodos and that appears to be that felines and ungulates share more morphological properties in the hindlimbs with theropod dinosaurs than cursorial birds. We calculated the ratio between the lower leg and the femur, and the relative length of the tibia and the metatarsus with respect to the length of the femur in cursorial birds, as well as felines, ungulates and non-avian theropods. We found that as the length of the femur increases, the length of the lower leg increases similarly in felines, ungulates and non-avian theropods. On the other hand, existing and extinct cursorial birds did not follow this pattern. This observation suggests that the hindlimb of cursorial birds are not well suited to serve as kinematic models for hindlimb of extinct theropod dinosaur locomotion.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.37 n.2 20192019-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000200620en10.4067/S0717-95022019000200620
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cursorial birds Non-Avian Theropods Kinematic Models
spellingShingle	Cursorial birds Non-Avian Theropods Kinematic Models Grossi,Bruno Loncomilla,Patricio Canals,Mauricio Ruiz-Del-Solar,Javier Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
description	SUMMARY: Determining kinematics of hindlimbs of theropod dinosaurs has been a challenge. Since cursorial birds are phylogenetically closest to theropod dinosaurs they are commonly used as a kinematic model of theropod dinosaur locomotion. Using a comparative biomechanical approach, we found that cursorial birds have a different morphology of legs than non avian theropodos and that appears to be that felines and ungulates share more morphological properties in the hindlimbs with theropod dinosaurs than cursorial birds. We calculated the ratio between the lower leg and the femur, and the relative length of the tibia and the metatarsus with respect to the length of the femur in cursorial birds, as well as felines, ungulates and non-avian theropods. We found that as the length of the femur increases, the length of the lower leg increases similarly in felines, ungulates and non-avian theropods. On the other hand, existing and extinct cursorial birds did not follow this pattern. This observation suggests that the hindlimb of cursorial birds are not well suited to serve as kinematic models for hindlimb of extinct theropod dinosaur locomotion.
author	Grossi,Bruno Loncomilla,Patricio Canals,Mauricio Ruiz-Del-Solar,Javier
author_facet	Grossi,Bruno Loncomilla,Patricio Canals,Mauricio Ruiz-Del-Solar,Javier
author_sort	Grossi,Bruno
title	Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
title_short	Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
title_full	Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
title_fullStr	Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
title_full_unstemmed	Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?
title_sort	are cursorial birds good kinematic models of non-avian theropods?
publisher	Sociedad Chilena de Anatomía
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000200620
work_keys_str_mv	AT grossibruno arecursorialbirdsgoodkinematicmodelsofnonaviantheropods AT loncomillapatricio arecursorialbirdsgoodkinematicmodelsofnonaviantheropods AT canalsmauricio arecursorialbirdsgoodkinematicmodelsofnonaviantheropods AT ruizdelsolarjavier arecursorialbirdsgoodkinematicmodelsofnonaviantheropods
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Are Cursorial Birds Good Kinematic Models of Non-Avian Theropods?

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