Archaeocyaths from South America: Review and a new record
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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ftunibueairesbd:todo:paper_00721050_v48_n2-3_p114_Gonzalez 2023-10-29T02:32:06+01:00 Archaeocyaths from South America: Review and a new record González, P.D. Tortello, M.F. Damborenea, S.E. Naipauer, M. Sato, A.M. Varela, R. https://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez unknown http://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez 2023-10-05T01:26:04Z 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. Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
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 |
spellingShingle |
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 González, P.D. Tortello, M.F. Damborenea, S.E. Naipauer, M. Sato, A.M. Varela, R. 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 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. 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. |
format |
Journal/Newspaper |
author |
González, P.D. Tortello, M.F. Damborenea, S.E. Naipauer, M. Sato, A.M. Varela, R. |
author_facet |
González, P.D. Tortello, M.F. Damborenea, S.E. Naipauer, M. Sato, A.M. Varela, R. |
author_sort |
González, P.D. |
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 |
url |
https://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_relation |
http://hdl.handle.net/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
op_doi |
https://doi.org/20.500.12110/paper_00721050_v48_n2-3_p114_Gonzalez |
_version_ |
1781053186880045056 |