The ankle joint of Pterodaustro guinazui

Autores
Burlot, Romain Armand Andre; Codorniú Dominguez, Laura Susana; Lenna Maria, Defend; Michel, Laurin
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The hindlimb of pterosaurs has been much less studied than the pterosaur wing. However, it is relevant to understand the evolution, phylogeny and ecology of these animals. This study provides the first complete and detailed description of the ankle of Pterodaustro guinazui. It documents three ontogenetic stages observed for the fusion of the tibiotarsus: in the youngest specimens the proximal tarsals are not fused to the tibia; in the subadults the tibiotarsus is formed, but with the suture still visible; in the adults, the tibiotarsus is entirely formed, without any suture. The fusion between astragalus and calcaneum precedes tibiotarsal fusion, but in close succession. The medial condyle of the tibiotarsus is made up of the astragalus, and the lateral condyle is composed of the calcaneum and part of the astragalus. The distal tibiotarsus has three articular facets, the most medial of which seems to greatly restrict the flexion-extension movement, a feature atypical of pterosaurs. The lateral part of the distal tibiotarsus, on the contrary, allows a very wide range of movement. Pterodaustro guinazui seems to have had an asymmetrical ankle joint, which could facilitate movements linked to wading behavior. We describe juvenile specimens that retain discrete distal tarsals Ⅱ and Ⅲ (common in the “non-pterodactyloid” pterosaurs), but also more mature specimens with completely fused distal tarsals Ⅱ and Ⅲ (a condition always observed in the late pterodactyloids). Moreover, the lateral distal tarsal (LDT) appears more robust in Pterodaustro than in Peteinosaurus or Dimorphodon, but shares a waisted shape with these taxa, unlike the more robust shape of the LDT of late pterodactyloids. The new information on the Pterodaustro ankle improves our anatomical knowledge of the basal Pterodactyloidea.
Fil: Burlot, Romain Armand Andre. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina. Muséum National d'Histoire Naturelle; Francia
Fil: Codorniú Dominguez, Laura Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina
Fil: Lenna Maria, Defend. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina
Fil: Michel, Laurin. Muséum National d'Histoire Naturelle; Francia
Materia
PTEROSAURIA
PTERODACTYLOIDEA
PTERODAUSTRO
ANKLE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/240037
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The ankle joint of Pterodaustro guinazuiBurlot, Romain Armand AndreCodorniú Dominguez, Laura SusanaLenna Maria, DefendMichel, LaurinPTEROSAURIAPTERODACTYLOIDEAPTERODAUSTROANKLEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The hindlimb of pterosaurs has been much less studied than the pterosaur wing. However, it is relevant to understand the evolution, phylogeny and ecology of these animals. This study provides the first complete and detailed description of the ankle of Pterodaustro guinazui. It documents three ontogenetic stages observed for the fusion of the tibiotarsus: in the youngest specimens the proximal tarsals are not fused to the tibia; in the subadults the tibiotarsus is formed, but with the suture still visible; in the adults, the tibiotarsus is entirely formed, without any suture. The fusion between astragalus and calcaneum precedes tibiotarsal fusion, but in close succession. The medial condyle of the tibiotarsus is made up of the astragalus, and the lateral condyle is composed of the calcaneum and part of the astragalus. The distal tibiotarsus has three articular facets, the most medial of which seems to greatly restrict the flexion-extension movement, a feature atypical of pterosaurs. The lateral part of the distal tibiotarsus, on the contrary, allows a very wide range of movement. Pterodaustro guinazui seems to have had an asymmetrical ankle joint, which could facilitate movements linked to wading behavior. We describe juvenile specimens that retain discrete distal tarsals Ⅱ and Ⅲ (common in the “non-pterodactyloid” pterosaurs), but also more mature specimens with completely fused distal tarsals Ⅱ and Ⅲ (a condition always observed in the late pterodactyloids). Moreover, the lateral distal tarsal (LDT) appears more robust in Pterodaustro than in Peteinosaurus or Dimorphodon, but shares a waisted shape with these taxa, unlike the more robust shape of the LDT of late pterodactyloids. The new information on the Pterodaustro ankle improves our anatomical knowledge of the basal Pterodactyloidea.Fil: Burlot, Romain Armand Andre. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina. Muséum National d'Histoire Naturelle; FranciaFil: Codorniú Dominguez, Laura Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; ArgentinaFil: Lenna Maria, Defend. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; ArgentinaFil: Michel, Laurin. Muséum National d'Histoire Naturelle; FranciaPolish Academy of Sciences. Institute of Paleobiology2024-07info: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/11336/240037Burlot, Romain Armand Andre; Codorniú Dominguez, Laura Susana; Lenna Maria, Defend; Michel, Laurin; The ankle joint of Pterodaustro guinazui; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 2; 7-2024; 329-3500567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app010972023.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.4202/app.01097.2023info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:19:59Zoai:ri.conicet.gov.ar:11336/240037instacron: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:34982025-09-10 13:20:00.087CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The ankle joint of Pterodaustro guinazui
title The ankle joint of Pterodaustro guinazui
spellingShingle The ankle joint of Pterodaustro guinazui
Burlot, Romain Armand Andre
PTEROSAURIA
PTERODACTYLOIDEA
PTERODAUSTRO
ANKLE
title_short The ankle joint of Pterodaustro guinazui
title_full The ankle joint of Pterodaustro guinazui
title_fullStr The ankle joint of Pterodaustro guinazui
title_full_unstemmed The ankle joint of Pterodaustro guinazui
title_sort The ankle joint of Pterodaustro guinazui
dc.creator.none.fl_str_mv Burlot, Romain Armand Andre
Codorniú Dominguez, Laura Susana
Lenna Maria, Defend
Michel, Laurin
author Burlot, Romain Armand Andre
author_facet Burlot, Romain Armand Andre
Codorniú Dominguez, Laura Susana
Lenna Maria, Defend
Michel, Laurin
author_role author
author2 Codorniú Dominguez, Laura Susana
Lenna Maria, Defend
Michel, Laurin
author2_role author
author
author
dc.subject.none.fl_str_mv PTEROSAURIA
PTERODACTYLOIDEA
PTERODAUSTRO
ANKLE
topic PTEROSAURIA
PTERODACTYLOIDEA
PTERODAUSTRO
ANKLE
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 hindlimb of pterosaurs has been much less studied than the pterosaur wing. However, it is relevant to understand the evolution, phylogeny and ecology of these animals. This study provides the first complete and detailed description of the ankle of Pterodaustro guinazui. It documents three ontogenetic stages observed for the fusion of the tibiotarsus: in the youngest specimens the proximal tarsals are not fused to the tibia; in the subadults the tibiotarsus is formed, but with the suture still visible; in the adults, the tibiotarsus is entirely formed, without any suture. The fusion between astragalus and calcaneum precedes tibiotarsal fusion, but in close succession. The medial condyle of the tibiotarsus is made up of the astragalus, and the lateral condyle is composed of the calcaneum and part of the astragalus. The distal tibiotarsus has three articular facets, the most medial of which seems to greatly restrict the flexion-extension movement, a feature atypical of pterosaurs. The lateral part of the distal tibiotarsus, on the contrary, allows a very wide range of movement. Pterodaustro guinazui seems to have had an asymmetrical ankle joint, which could facilitate movements linked to wading behavior. We describe juvenile specimens that retain discrete distal tarsals Ⅱ and Ⅲ (common in the “non-pterodactyloid” pterosaurs), but also more mature specimens with completely fused distal tarsals Ⅱ and Ⅲ (a condition always observed in the late pterodactyloids). Moreover, the lateral distal tarsal (LDT) appears more robust in Pterodaustro than in Peteinosaurus or Dimorphodon, but shares a waisted shape with these taxa, unlike the more robust shape of the LDT of late pterodactyloids. The new information on the Pterodaustro ankle improves our anatomical knowledge of the basal Pterodactyloidea.
Fil: Burlot, Romain Armand Andre. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina. Muséum National d'Histoire Naturelle; Francia
Fil: Codorniú Dominguez, Laura Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina
Fil: Lenna Maria, Defend. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Geología; Argentina
Fil: Michel, Laurin. Muséum National d'Histoire Naturelle; Francia
description The hindlimb of pterosaurs has been much less studied than the pterosaur wing. However, it is relevant to understand the evolution, phylogeny and ecology of these animals. This study provides the first complete and detailed description of the ankle of Pterodaustro guinazui. It documents three ontogenetic stages observed for the fusion of the tibiotarsus: in the youngest specimens the proximal tarsals are not fused to the tibia; in the subadults the tibiotarsus is formed, but with the suture still visible; in the adults, the tibiotarsus is entirely formed, without any suture. The fusion between astragalus and calcaneum precedes tibiotarsal fusion, but in close succession. The medial condyle of the tibiotarsus is made up of the astragalus, and the lateral condyle is composed of the calcaneum and part of the astragalus. The distal tibiotarsus has three articular facets, the most medial of which seems to greatly restrict the flexion-extension movement, a feature atypical of pterosaurs. The lateral part of the distal tibiotarsus, on the contrary, allows a very wide range of movement. Pterodaustro guinazui seems to have had an asymmetrical ankle joint, which could facilitate movements linked to wading behavior. We describe juvenile specimens that retain discrete distal tarsals Ⅱ and Ⅲ (common in the “non-pterodactyloid” pterosaurs), but also more mature specimens with completely fused distal tarsals Ⅱ and Ⅲ (a condition always observed in the late pterodactyloids). Moreover, the lateral distal tarsal (LDT) appears more robust in Pterodaustro than in Peteinosaurus or Dimorphodon, but shares a waisted shape with these taxa, unlike the more robust shape of the LDT of late pterodactyloids. The new information on the Pterodaustro ankle improves our anatomical knowledge of the basal Pterodactyloidea.
publishDate 2024
dc.date.none.fl_str_mv 2024-07
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/11336/240037
Burlot, Romain Armand Andre; Codorniú Dominguez, Laura Susana; Lenna Maria, Defend; Michel, Laurin; The ankle joint of Pterodaustro guinazui; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 2; 7-2024; 329-350
0567-7920
1732-2421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/240037
identifier_str_mv Burlot, Romain Armand Andre; Codorniú Dominguez, Laura Susana; Lenna Maria, Defend; Michel, Laurin; The ankle joint of Pterodaustro guinazui; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 2; 7-2024; 329-350
0567-7920
1732-2421
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://www.app.pan.pl/article/item/app010972023.html
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.01097.2023
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
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 12.48226

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