Archaeocyaths from South America: Review and a new record

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In South America, autochthonous archaeocyathan faunas preserved in Early Cambrian limestones have not been found yet. Nevertheless, a few well-documented occurrences of these fossils in clasts contained in coarse-grained rocks of a wide age range have been discovered in recent years. Erratic limesto...

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Autores principales: González, Pablo Diego, Tortello, Marcelo Franco, Damborenea, Susana Ester, Naipauer, Maximiliano, Sato, Ana María, Varela, Ricardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Naturales
Archaeocyaths
Buenos Aires
Gondwana
Late palaeozoic glaciations
Sierras australes
South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/101879
https://ri.conicet.gov.ar/11336/92584
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-101879
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Archaeocyaths
Buenos Aires
Gondwana
Late palaeozoic glaciations
Sierras australes
South America
spellingShingle Ciencias Naturales
Archaeocyaths
Buenos Aires
Gondwana
Late palaeozoic glaciations
Sierras australes
South America
González, Pablo Diego
Tortello, Marcelo Franco
Damborenea, Susana Ester
Naipauer, Maximiliano
Sato, Ana María
Varela, Ricardo
Archaeocyaths from South America: Review and a new record
topic_facet Ciencias Naturales
Archaeocyaths
Buenos Aires
Gondwana
Late palaeozoic glaciations
Sierras australes
South America
description In South America, autochthonous archaeocyathan faunas preserved in Early Cambrian limestones have not been found yet. Nevertheless, a few well-documented occurrences of these fossils in clasts contained in coarse-grained rocks of a wide age range have been discovered in recent years. Erratic limestone blocks from the Late Carboniferous-Early Permian Fitzroy Tillite Formation in the Falkland/Malvinas Islands yielded three archaeocyath taxa. Also, seven taxa were reported from archaeocyathan limestone clasts in a metaconglomerate of the Cambro-Ordovician El Jagüelito Formation in northern Patagonia. In addition, a new record from the Late Carboniferous-Early Permian Sauce Grande Formation diamictites in Sierras Australes, Buenos Aires Province, Argentina, is presented herein. Preservation of this scarce new material is poor, but at least three different taxa can be distinguished. The most likely source of all archaeocyathan limestone clasts found in southern South America is the Shackleton Limestone from the Transantarctic Mountains in East Antarctica. The new record from the Sauce Grande Formation and the inferred clast provenance reinforce the correlation between this unit, the Dwyka Tillite (South Africa) and the Fitzroy Tillite Formation (Falklands/Malvinas), suggesting a very wide distribution of these Antarctic occurrences during the Late Carboniferous-Early Permian Gondwana glaciation (Episode III). Thus, even though being allochthonous, archaeocyaths are emerging as a new key biological feature for Gondwana palaeogeographic reconstructions.
format Articulo
Articulo
author González, Pablo Diego
Tortello, Marcelo Franco
Damborenea, Susana Ester
Naipauer, Maximiliano
Sato, Ana María
Varela, Ricardo
author_facet González, Pablo Diego
Tortello, Marcelo Franco
Damborenea, Susana Ester
Naipauer, Maximiliano
Sato, Ana María
Varela, Ricardo
author_sort González, Pablo Diego
title Archaeocyaths from South America: Review and a new record
title_short Archaeocyaths from South America: Review and a new record
title_full Archaeocyaths from South America: Review and a new record
title_fullStr Archaeocyaths from South America: Review and a new record
title_full_unstemmed Archaeocyaths from South America: Review and a new record
title_sort archaeocyaths from south america: review and a new record
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/101879
https://ri.conicet.gov.ar/11336/92584
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