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:	Naipauer, Maximiliano, Sato, Ana María
Publicado:	2013
Materias:	Archaeocyaths Buenos Aires Gondwana Late Palaeozoic glaciations Sierras Australes South America biostratigraphy Cambrian Carboniferous diamictite fossil record glaciation invertebrate limestone new record Ordovician paleogeography paleontology provenance reconstruction sessile species species occurrence Falkland Islands (Malvinas) Archaeocyatha
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00721050_v48_n2-3_p114_Gonzalez http://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00721050_v48_n2-3_p114_Gonzalez
record_format	dspace
spelling	paper:paper_00721050_v48_n2-3_p114_Gonzalez2023-06-08T15:06:25Z Archaeocyaths from South America: Review and a new record Naipauer, Maximiliano Sato, Ana María Archaeocyaths Buenos Aires Gondwana Late Palaeozoic glaciations Sierras Australes South America biostratigraphy Cambrian Carboniferous diamictite fossil record glaciation Gondwana invertebrate limestone new record Ordovician paleogeography paleontology provenance reconstruction sessile species species occurrence Falkland Islands (Malvinas) Archaeocyatha 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. © 2012 John Wiley & Sons, Ltd. Fil:Naipauer, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sato, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00721050_v48_n2-3_p114_Gonzalez http://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Archaeocyaths Buenos Aires Gondwana Late Palaeozoic glaciations Sierras Australes South America biostratigraphy Cambrian Carboniferous diamictite fossil record glaciation Gondwana invertebrate limestone new record Ordovician paleogeography paleontology provenance reconstruction sessile species species occurrence Falkland Islands (Malvinas) Archaeocyatha
spellingShingle	Archaeocyaths Buenos Aires Gondwana Late Palaeozoic glaciations Sierras Australes South America biostratigraphy Cambrian Carboniferous diamictite fossil record glaciation Gondwana invertebrate limestone new record Ordovician paleogeography paleontology provenance reconstruction sessile species species occurrence Falkland Islands (Malvinas) Archaeocyatha Naipauer, Maximiliano Sato, Ana María Archaeocyaths from South America: Review and a new record
topic_facet	Archaeocyaths Buenos Aires Gondwana Late Palaeozoic glaciations Sierras Australes South America biostratigraphy Cambrian Carboniferous diamictite fossil record glaciation Gondwana invertebrate limestone new record Ordovician paleogeography paleontology provenance reconstruction sessile species species occurrence Falkland Islands (Malvinas) Archaeocyatha
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. © 2012 John Wiley & Sons, Ltd.
author	Naipauer, Maximiliano Sato, Ana María
author_facet	Naipauer, Maximiliano Sato, Ana María
author_sort	Naipauer, Maximiliano
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	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00721050_v48_n2-3_p114_Gonzalez http://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez
work_keys_str_mv	AT naipauermaximiliano archaeocyathsfromsouthamericareviewandanewrecord AT satoanamaria archaeocyathsfromsouthamericareviewandanewrecord
_version_	1768544859309735936

Archaeocyaths from South America: Review and a new record

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