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dc.contributor.author
Melchor, Ricardo Nestor
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dc.contributor.author
Sarjeant, William Antony Swithin
dc.date.available
2019-08-16T18:45:04Z
dc.date.issued
2004-12
dc.identifier.citation
Melchor, Ricardo Nestor; Sarjeant, William Antony Swithin; Small amphibian and reptile footprints from the Permian Carapacha Basin, Argentina; Taylor & Francis; Ichnos; 11; 1-2; 12-2004; 57-78
dc.identifier.issn
1042-0940
dc.identifier.uri
http://hdl.handle.net/11336/81750
dc.description.abstract
This paper contains a taxonomic study of the Permian tetrapod ichnofauna from the Carapacha Basin. Tetrapod traces are analyzed in their environmental context and compared with similar faunas from Europe and North America. This ichnofauna is particularly relevant because of the scarcity of Permian tetrapod tracks from South America and also of Permian tetrapod fossils from Argentina. Ephemeral fluvial and shallow lacustrine deposits compose the sedimentary succession of the basin, which is represented by the Carapacha Formation. Most of the tracks have been collected from the upper member of the formation (Urre-Lauquen Member), mainly from freshwater ephemeral lake deposits as well as from playa-lake mudflats. The deposits of this member have been attributed to the early Late Permian on the basis of a Glossopteris fossil flora. Ichnotaxonomic designations of tetrapod traces are made on the basis of morphologic features that reflect the anatomy of the producer and special attention has been paid to extramorphologic deformations observed in the track assemblage. A total of four footprint ichnotaxa have been recognized, namely Batrachichnus salamandroides (Geinitz, 1861), Hyloidichnus bifurcatus Gilmore, 1927, cf. Amphisauropus isp. and cf. Varanopus isp. These track taxa are associated with two forms of vertebrate swimming traces (Characichnos isp. and type A swimming trace) and a ,possible fish trail. Invertebrate trace fossils include abundant arthropod locomotion traces and Scoyenia isp. The ichnofauna is composed of six tetrapod ichnocoenoses that are dominated by tiny amphibian tracks attributed to Temnospondyli (Batrachichnus and type A swimming trace) and Seymouriamorpha (Amphisauropus), and also contain the footprints of small reptiles, mostly Captorhinomorpha and possibly Pelycosauria (Hyloidichnus and Varanopus). Even if the ichnofauna of the Carapacha Basin is slightly younger than typical examples from the literature of the Early Permian "red bed ichnofacies" (Hunt et al., 1995b), a comparison is made. However, further detailed case studies are needed to formally define this "red bed ichnofacies" and its prospective subdivisions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Amphisauropus
dc.subject
Argentina
dc.subject
Batrachichnus
dc.subject
Carapacha Basin
dc.subject
Characichnos
dc.subject
Hyloidichnus
dc.subject
Lacustrine Environment
dc.subject
Permian
dc.subject
Tetrapod Swimming Traces
dc.subject
Varanopus
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Small amphibian and reptile footprints from the Permian Carapacha Basin, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-15T16:21:26Z
dc.journal.volume
11
dc.journal.number
1-2
dc.journal.pagination
57-78
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Melchor, Ricardo Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
dc.description.fil
Fil: Sarjeant, William Antony Swithin. University of Saskatchewan; Canadá
dc.journal.title
Ichnos
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/10420940490428814
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1080/10420940490428814
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