The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina

Autores
Cei, José Miguel Alfredo María
Año de publicación
1969
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Late Tertiary basaltic rocks of the Patagonian Meseta of Somuncura, Rio Negro, Argentina, extend for about 15,000 square km north of 42° South Latitude, approximately 60 miles from the Atlantic coast. It is a flat stepparian landscape of some 1200-1400 m elevation in which many temporary clay-lagoons are scattered. Small rocky streams filter from the basaltic uplands towards the lower slopes of the Meseta, about 700-500 m. The fauna of such an isolated environment is very peculiar and a high rate of endemic forms can be emphasized. Two new species of telmatobiid frogs are reported: Telmatobius reverberii from the clay-lagoons of the stepparian uplands, and Telmatobius somuncurensis from the lower rocky streams. Adults and tadpoles of Telmatobius reverberii are described; this form has morphological and ecological affinities with the smaller Telmatobius praebasalticus of the volcanic lagoons of Neuquen, near the Southern Argentine Cordilleras. Certain characteristics of Telmatobius somuncurensis are discussed, such as the uncommon everted cloaca and the similarity between the upper and lower rounded structures of its iris and the upper "meniscus” of the iris of the east-Brazilian Cyclorhamphus. Probable biogeographic relationships and a tentative evolutionary history of these ancient leptodactylid stocks are discussed.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
Materia
Zoología
Telmatobiid Fauna
Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/88586
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/88586
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of ArgentinaCei, José Miguel Alfredo MaríaZoologíaTelmatobiid FaunaArgentinaThe Late Tertiary basaltic rocks of the Patagonian Meseta of Somuncura, Rio Negro, Argentina, extend for about 15,000 square km north of 42° South Latitude, approximately 60 miles from the Atlantic coast. It is a flat stepparian landscape of some 1200-1400 m elevation in which many temporary clay-lagoons are scattered. Small rocky streams filter from the basaltic uplands towards the lower slopes of the Meseta, about 700-500 m. The fauna of such an isolated environment is very peculiar and a high rate of endemic forms can be emphasized. Two new species of telmatobiid frogs are reported: <i>Telmatobius reverberii</i> from the clay-lagoons of the stepparian uplands, and <i>Telmatobius somuncurensis</i> from the lower rocky streams. Adults and tadpoles of <i>Telmatobius reverberii</i> are described; this form has morphological and ecological affinities with the smaller <i>Telmatobius praebasalticus</i> of the volcanic lagoons of Neuquen, near the Southern Argentine Cordilleras. Certain characteristics of <i>Telmatobius somuncurensis</i> are discussed, such as the uncommon everted cloaca and the similarity between the upper and lower rounded structures of its iris and the upper "meniscus” of the iris of the east-Brazilian Cyclorhamphus. Probable biogeographic relationships and a tentative evolutionary history of these ancient leptodactylid stocks are discussed.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Museo1969-07-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-18http://sedici.unlp.edu.ar/handle/10915/88586enginfo:eu-repo/semantics/altIdentifier/issn/0022-1511info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:44Zoai:sedici.unlp.edu.ar:10915/88586Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:44.665SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
title The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
spellingShingle The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
Cei, José Miguel Alfredo María
Zoología
Telmatobiid Fauna
Argentina
title_short The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
title_full The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
title_fullStr The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
title_full_unstemmed The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
title_sort The Patagonian Telmatobiid Fauna of the Volcanic Somuncura Plateau of Argentina
dc.creator.none.fl_str_mv Cei, José Miguel Alfredo María
author Cei, José Miguel Alfredo María
author_facet Cei, José Miguel Alfredo María
author_role author
dc.subject.none.fl_str_mv Zoología
Telmatobiid Fauna
Argentina
topic Zoología
Telmatobiid Fauna
Argentina
dc.description.none.fl_txt_mv The Late Tertiary basaltic rocks of the Patagonian Meseta of Somuncura, Rio Negro, Argentina, extend for about 15,000 square km north of 42° South Latitude, approximately 60 miles from the Atlantic coast. It is a flat stepparian landscape of some 1200-1400 m elevation in which many temporary clay-lagoons are scattered. Small rocky streams filter from the basaltic uplands towards the lower slopes of the Meseta, about 700-500 m. The fauna of such an isolated environment is very peculiar and a high rate of endemic forms can be emphasized. Two new species of telmatobiid frogs are reported: <i>Telmatobius reverberii</i> from the clay-lagoons of the stepparian uplands, and <i>Telmatobius somuncurensis</i> from the lower rocky streams. Adults and tadpoles of <i>Telmatobius reverberii</i> are described; this form has morphological and ecological affinities with the smaller <i>Telmatobius praebasalticus</i> of the volcanic lagoons of Neuquen, near the Southern Argentine Cordilleras. Certain characteristics of <i>Telmatobius somuncurensis</i> are discussed, such as the uncommon everted cloaca and the similarity between the upper and lower rounded structures of its iris and the upper "meniscus” of the iris of the east-Brazilian Cyclorhamphus. Probable biogeographic relationships and a tentative evolutionary history of these ancient leptodactylid stocks are discussed.
Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).
Facultad de Ciencias Naturales y Museo
description The Late Tertiary basaltic rocks of the Patagonian Meseta of Somuncura, Rio Negro, Argentina, extend for about 15,000 square km north of 42° South Latitude, approximately 60 miles from the Atlantic coast. It is a flat stepparian landscape of some 1200-1400 m elevation in which many temporary clay-lagoons are scattered. Small rocky streams filter from the basaltic uplands towards the lower slopes of the Meseta, about 700-500 m. The fauna of such an isolated environment is very peculiar and a high rate of endemic forms can be emphasized. Two new species of telmatobiid frogs are reported: <i>Telmatobius reverberii</i> from the clay-lagoons of the stepparian uplands, and <i>Telmatobius somuncurensis</i> from the lower rocky streams. Adults and tadpoles of <i>Telmatobius reverberii</i> are described; this form has morphological and ecological affinities with the smaller <i>Telmatobius praebasalticus</i> of the volcanic lagoons of Neuquen, near the Southern Argentine Cordilleras. Certain characteristics of <i>Telmatobius somuncurensis</i> are discussed, such as the uncommon everted cloaca and the similarity between the upper and lower rounded structures of its iris and the upper "meniscus” of the iris of the east-Brazilian Cyclorhamphus. Probable biogeographic relationships and a tentative evolutionary history of these ancient leptodactylid stocks are discussed.
publishDate 1969
dc.date.none.fl_str_mv 1969-07-10
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/88586
url http://sedici.unlp.edu.ar/handle/10915/88586
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-1511
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1-18
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instname:Universidad Nacional de La Plata
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collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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