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Florencia Moreno,Ana Mestre,Susana Heredia
Pág. 302 - 317
The calcareous microfossils present in the Ordovician and Silurian carbonate successions around the world are limited to few studies and their biological affinities and environmental preferences remain indefinite. In the carbonate Ordovician San Juan For...
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Ana Mestre,Mercedes Gallardo,María José Salas,Susana Heredia
Pág. 423 - 444
The microfossil hosted in the strata of the upper part of the San Juan Formation has been widely studied in several sections to the northward of the Argentinian Central Precordillera. In contrast, the coeval strata at the Los Baños de Talacasto section, ...
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Wieslaw Trela, Ewa Krzeminska, Karol Jewula and Zbigniew Czupyt
This report provides oxygen isotopes from apatite of late Middle and Late Ordovician conodonts from the southern Holy Cross Mountains in south-eastern Poland. It was a unique time interval characterised by a significant change in the Ordovician climate, ...
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Blanca A. Toro,Susana E. Heredia,Nexxys C. Herrera Sánchez,Florencia Moreno
Pág. 144 - 161
Recent biostratigraphic studies on the western argentine Puna recorded the Middle Ordovician conodont Baltoniodus cf. B. navis (Lindström) for first time, related to key graptolite taxa of the Central Andean Basin. The analyzed material comes from the lo...
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Matías J. Mango,Guillermo L. Albanesi
Pág. 577 - 598
This study deals with the conodont biostratigraphy from the uppermost part of La Silla Formation (9.6 m) and the overlying San Juan Formation (264.7 m), at the Cerro La Silla section, Central Precordillera of San Juan, Argentina. The 41 samples of carbon...
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Fernanda Serra,Nicolás A. Feltes,Matías Mango,Miles A. Henderson,Guillermo L. Albanesi,Gladys Ortega
Pág. 125 - 143
The Ordovician System is extensively represented in the Precordillera of San Juan Province, Argentina. At the Cerro La Chilca in the Jáchal area, the limestone of the San Juan Formation is paraconformably overlain by interbedded limestone and shale of th...
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Susana Heredia,Ana Mestre,Cintia Kaufmann,Tatiana Soria
Pág. 336 - 344
The stratigraphic record of the Pygodus serra conodont Zone in the Cuyania terrane of western Argentina is discussed in this contribution. Three well-known sections were sampled in Precordillera and the San Rafael Block. The studied successions are compo...
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Josefina Carlorosi,Susana B. Esteban,M. Franco Tortello
Pág. 168 - 182
A conodont assemblage recovered from the middle part of the Santa Rosita Formation at Pantipampa (Iruya area, northwestern Argentina) is described herein. It includes Cordylodus angulatus Pander, C. cayesi Druce and Jones, C. lindstromi Druce and Jones, ...
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Susana Heredia,Ana Mestre
Pág. 556 - 566
The Middle-Upper Ordovician Ponón Trehué Formation cropping out in the San Rafael Block (Argentina) provided a large collection of conodonts which have been published years ago. The species Eoplacognathus robustus and Eoplacognathus lindstroemi recovered...
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Gustavo G. Voldman,Juan L. Alonso,Luis P. Fernández,Gladys Ortega,Guillermo L. Albanesi,Aldo L. Banchig,Raúl Cardó
Pág. 399 - 409
The Rinconada Formation is a mélange that crops out in the eastern margin of the Argentine Precordillera, an exotic terrane accreted to Gondwana in Ordovician times. Its gravity-driven deposits have been studied by means of conodont and graptolite biostr...
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