Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers

The Los Menucos locality in Patagonia, Argentina, bears a well-known ichnofauna mostly documented by small therapsid footprints. Within this ichnofauna, large pentadactyl footprints are also represented but to date were relatively underinvestigated. These footprints are here analyzed and discussed b...

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Detalles Bibliográficos
Autores: Citton, Paolo, Díaz Martínez, Ignacio, de Valais, Silvina, Cónsole Gonella, Carlos Alfredo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/91096
Acceso en línea:http://hdl.handle.net/11336/91096
Access Level:acceso abierto
Palabra clave:DICYNODONTS
GONDWANA
LOS MENUCOS
PATAGONIA
PENTASAUROPUS
THERAPSIDS
TRACKMAKERS
TRACKS
TRIASSIC
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/91096
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
title Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
spellingShingle Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
Citton, Paolo
DICYNODONTS
GONDWANA
LOS MENUCOS
PATAGONIA
PENTASAUROPUS
THERAPSIDS
TRACKMAKERS
TRACKS
TRIASSIC
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
title_full Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
title_fullStr Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
title_full_unstemmed Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
title_sort Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers
dc.creator.none.fl_str_mv Citton, Paolo
Díaz Martínez, Ignacio
de Valais, Silvina
Cónsole Gonella, Carlos Alfredo
author Citton, Paolo
author_facet Citton, Paolo
Díaz Martínez, Ignacio
de Valais, Silvina
Cónsole Gonella, Carlos Alfredo
author_role author
author2 Díaz Martínez, Ignacio
de Valais, Silvina
Cónsole Gonella, Carlos Alfredo
author2_role author
author
author
dc.subject.none.fl_str_mv DICYNODONTS
GONDWANA
LOS MENUCOS
PATAGONIA
PENTASAUROPUS
THERAPSIDS
TRACKMAKERS
TRACKS
TRIASSIC
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic DICYNODONTS
GONDWANA
LOS MENUCOS
PATAGONIA
PENTASAUROPUS
THERAPSIDS
TRACKMAKERS
TRACKS
TRIASSIC
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description The Los Menucos locality in Patagonia, Argentina, bears a well-known ichnofauna mostly documented by small therapsid footprints. Within this ichnofauna, large pentadactyl footprints are also represented but to date were relatively underinvestigated. These footprints are here analyzed and discussed based on palaeobiological indications (i.e., trackmaker identification). High resolution digital photogrammetry method was performed to achieve a more objective representation of footprint three-dimensional morphologies. The footprints under study are compared with Pentasauropus from the Upper Triassic lower Elliot Formation (Stormberg Group) of the Karoo Basin (Lesotho, southern Africa). Some track features suggest a therapsid-grade synapsid as the potential trackmaker, to be sought among anomodont dicynodonts (probably Kannemeyeriiformes). While the interpretation of limb posture in the producer of Pentasauropus tracks from the Los Menucos locality agrees with those described from the dicynodont body fossil record, the autopodial posture does not completely agree. The relative distance between the impression of the digital (ungual) bases and the distal edge of the pad trace characterizing the studied tracks likely indicates a subunguligrade foot posture (i.e., standing on the last and penultimate phalanges) in static stance, but plantiportal (i.e., the whole foot skeleton and related soft tissues are weightbearing) during the dynamics of locomotion. The reconstructed posture might have implied an arched configuration of the articulated metapodials and at least of the proximal phalanges, as well as little movement capabilities of the metapodials. Usually, a subunguligrade-plantiportal autopod has been described for gigantic animals (over six hundreds kilograms of body weight) to obtain an efficient management of body weight. Nevertheless, this kind of autopod is described here for large but not gigantic animals, as the putative trackmakers of Pentasauropus were. This attribution implies that such an autopodial structure was promoted independently from the body size in the putative trackmakers. From an evolutionary point of view, subunguligradeplantiportal autopods not necessarily must be related with an increase in body size, but rather the increase in body size requires a subunguligrade or unguligrade, plantiportal foot. Chronostratigraphically, Pentasauropus was reported from Upper Triassic deposits of South Africa and United States, and from late Middle Triassic and Upper Triassic deposits of Argentina. Based on the stratigraphic distribution of the ichnogenus currently accepted, a Late Triassic age is here proposed for the Pentasauropus-bearing levels of the Los Menucos Group.
publishDate 2018
dc.date.none.fl_str_mv 2018-08
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/11336/91096
Citton, Paolo; Díaz Martínez, Ignacio; de Valais, Silvina; Cónsole Gonella, Carlos Alfredo; Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers; PeerJ; PeerJ; 6; 8-2018; 1-36
2167-8359
CONICET Digital
CONICET
url http://hdl.handle.net/11336/91096
identifier_str_mv Citton, Paolo; Díaz Martínez, Ignacio; de Valais, Silvina; Cónsole Gonella, Carlos Alfredo; Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers; PeerJ; PeerJ; 6; 8-2018; 1-36
2167-8359
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://peerj.com/articles/5358
info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.5358
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv PeerJ
publisher.none.fl_str_mv PeerJ
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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spelling Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakersCitton, PaoloDíaz Martínez, Ignaciode Valais, SilvinaCónsole Gonella, Carlos AlfredoDICYNODONTSGONDWANALOS MENUCOSPATAGONIAPENTASAUROPUSTHERAPSIDSTRACKMAKERSTRACKSTRIASSIChttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Los Menucos locality in Patagonia, Argentina, bears a well-known ichnofauna mostly documented by small therapsid footprints. Within this ichnofauna, large pentadactyl footprints are also represented but to date were relatively underinvestigated. These footprints are here analyzed and discussed based on palaeobiological indications (i.e., trackmaker identification). High resolution digital photogrammetry method was performed to achieve a more objective representation of footprint three-dimensional morphologies. The footprints under study are compared with Pentasauropus from the Upper Triassic lower Elliot Formation (Stormberg Group) of the Karoo Basin (Lesotho, southern Africa). Some track features suggest a therapsid-grade synapsid as the potential trackmaker, to be sought among anomodont dicynodonts (probably Kannemeyeriiformes). While the interpretation of limb posture in the producer of Pentasauropus tracks from the Los Menucos locality agrees with those described from the dicynodont body fossil record, the autopodial posture does not completely agree. The relative distance between the impression of the digital (ungual) bases and the distal edge of the pad trace characterizing the studied tracks likely indicates a subunguligrade foot posture (i.e., standing on the last and penultimate phalanges) in static stance, but plantiportal (i.e., the whole foot skeleton and related soft tissues are weightbearing) during the dynamics of locomotion. The reconstructed posture might have implied an arched configuration of the articulated metapodials and at least of the proximal phalanges, as well as little movement capabilities of the metapodials. Usually, a subunguligrade-plantiportal autopod has been described for gigantic animals (over six hundreds kilograms of body weight) to obtain an efficient management of body weight. Nevertheless, this kind of autopod is described here for large but not gigantic animals, as the putative trackmakers of Pentasauropus were. This attribution implies that such an autopodial structure was promoted independently from the body size in the putative trackmakers. From an evolutionary point of view, subunguligradeplantiportal autopods not necessarily must be related with an increase in body size, but rather the increase in body size requires a subunguligrade or unguligrade, plantiportal foot. Chronostratigraphically, Pentasauropus was reported from Upper Triassic deposits of South Africa and United States, and from late Middle Triassic and Upper Triassic deposits of Argentina. Based on the stratigraphic distribution of the ichnogenus currently accepted, a Late Triassic age is here proposed for the Pentasauropus-bearing levels of the Los Menucos Group.Fil: Citton, Paolo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Díaz Martínez, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: de Valais, Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Cónsole Gonella, Carlos Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaPeerJ2018-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/91096Citton, Paolo; Díaz Martínez, Ignacio; de Valais, Silvina; Cónsole Gonella, Carlos Alfredo; Triassic pentadactyl tracks from the Los Menucos Group (Río Negro province, Patagonia Argentina): Possible constraints on the autopodial posture of Gondwanan trackmakers; PeerJ; PeerJ; 6; 8-2018; 1-362167-8359CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/5358info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.5358info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:28:24Zoai:ri.conicet.gov.ar:11336/91096instacron: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:34982024-05-08 14:28:24.826CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
score 15,811543

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