The coupled occurrence of Cimmeriella-Jakutoproductus (Brachiopoda: Productidina) in Patagonia: implications for Early Permian high to middle paleolatitudinal correlations and paleoclimatic reconstruction

Authors

  • A.C. TABOADA CONICET-Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales, Sede Esquel,Universidad Nacional de la Patagonia “San Juan Bosco” (UNPSJB) RN 259, km 16,5, Esquel (U9200), Chubut, Argentina.
  • M.A. PAGANI CONICET-Museo Paleontológico “Egidio Feruglio” (MEF)Av. Fontana nº 140, Trelew (U9100GYO), Chubut, Argentina.

Keywords:

Cisuralian, Patagonia, Jakutoproductus, Cimmeriella, High paleolatitude correlations

Abstract

The brachiopod species Jakutoproductus sabattiniae sp. nov. and Cimmeriella willi sp. nov. from the Cisuralian deposits of the Tepuel-Genoa basin are described here. Biostratigraphy and stratigraphy of the uppermost section of the Tepuel Group (Mojón de Hierro and Río Genoa formations) are analyzed and a distinctive faunal succession is recognized: the Cimmeriella and Jakutoproductus faunal assemblages of late Sakmarian (Sterlitamakian) and early Artinskian estimated ages, respectively. The lower Permian correlations of these faunal occurrences and the chronology of mostly early Permian glacial episodes between Western and Eastern Argentina with Patagonia are discussed. The coupled Verchojania-Jakutoproductus, Eurydesma-Cimmeriella and Cimmeriella-Jakutoproductus faunal records have been used as a tool for the correlation of early Permian marine sequences from the high to middle paleolatidudinal settings of both hemispheres.
Any 2010 Vol.: 8 Núm.: 4

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Published

2011-01-11

Issue

Vol. 8 No. 4 (2010): The Late Palaeozoic of western Gondwana: new contributions from southern South America

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Articles

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