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Rodrigo L. Tomassini,Claudia I. Montalvo,Elisa Beilinson,Daniel Barasoain,Gabriela I. Schmidt,Esperanza Cerdeño,Alfredo E. Zurita,Ricardo A. Bonini,Ángel R. Miño-Boilini,Luciano L. Rasia,Germán M. Gasparini
Pág. 22 - 56
Arenas Blancas is a poorly known fossiliferous site located in the lower reach of the Chasicó creek (Buenos Aires Province, Argentina), with great relevance from a biostratigraphic viewpoint. The Macrochorobates scalabrinii Biozone was defined in this si...
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Mattia Marini, Luca Maria Foresi, Viviana Barbagallo, Michelangelo Bisconti, Agata Di Stefano, Giovanni Muttoni and Ivan Martini
A c. 31 m thick section straddling the fossil find of an Early Pliocene baleen whale (?Brunella?, hereafter), made in 2007 in the sedimentary fill of the Middle Ombrone Basin of Tuscany, is investigated for depositional age and environment combining pala...
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Agata Di Stefano, Natale Maria D?Andrea, Salvatore Distefano, Salvatore Urso, Laura Borzì, Niccolò Baldassini and Viviana Barbagallo
The quantitative analysis of the calcareous nannofossil content yield in the 600 m thick succession drilled at ODP Site 1123 (offshore New Zealand), considered as a reference section for the Southern Ocean region, allowed the recognition of 43 bioevents ...
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Alejandro Kramarz,Eduardo Bellosi,Mariano Bond,Analía M. Forasiepi,Juan Carlos Fernicola,Guillermo Aguirrezabala,Daniella Teixeira de Rezende
Pág. 238 - 272
The Paleogene terrestrial faunal succession and its associated bearing volcaniclastic deposits has been exhaustively studied in central Patagonia, but there is still no acceptable litho-bio-chronostratigraphic ordering for the extra-Andean North Patagoni...
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Peter K. Bijl,G. Raquel Guerstein,Edgar A. Sanmiguel Jaimes,Appy Sluijs,Silvio Casadio,Victor Valencia,Cecilia R. Amenábar,Alfonso Encinas
Pág. 185 - 218
The tectonic opening of the Tasmanian Gateway and Drake Passage represented crucial geographic requirements for the Cenozoic development of the Antarctic Circumpolar Current (ACC). Particularly the tectonic complexity of Drake Passage has hampered the ex...
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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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Luciano Luis Rasia,Ricardo A. Bonini,Adriana M. Candela
Pág. 430 - 445
In this work, we present two new records of Lagostomus from the late Miocene of Argentina. A right mandible from the Huachipampa Formation (Loma del Camello, San Juan Province) is assigned to Lagostomus telenkechanum, previously recorded in the Arroyo Ch...
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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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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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Arturo Cesar Taboada,María Alejandra Pagani,María Karina Pinilla,Franco Tortello,César Augusto Taboada
Pág. 629 - 669
A narrow upper Paleozoic belt crops out in the northern tip of Sierra de Tecka through the Quebrada de Güera-Peña (Patagonia, Argentina). There, black shales of the Pampa de Tepuel Formation contain marine fossil invertebrates previously listed as belong...
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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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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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Matías J. Mango,Guillermo L. Albanesi
Pág. 274 - 299
The present study deals with the conodont biostratigraphy from the middle and upper parts of the San Juan Formation (Lower-Middle Ordovician) exposed at the Los Gatos creek section, west of the cerro Viejo de Huaco, Central Precordillera of San Juan Prov...
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Nicolás A. Feltes, Guillermo L. Albanesi, Stig M. Bergström
Pág. 60 - 85
Middle Darriwilian to lower Sandbian conodonts were recorded from the Las Aguaditas Formation at
its type section in the Argentine Precordillera. A total of 9,974 conodont specimens were recovered from 46 carbonate
samples, which represent 68 species of ...
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Juan Pablo Pérez Panera
Pág. 117 - 140
Calcareous nannofossils from two boreholes (Campo Bola and Sur Río Chico) in the subsurface of eastern Austral Basin, Santa Cruz Province, Argentina, allowed the identification of Early to Middle Paleocene, Early to Middle Eocene and Late Eocene to Early...
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Sara Ballent,Andrea Concheyro,Guillermina Sagasti
Pág. 47 - 79
A bioestratigraphical and palaeoenvironmental study of the Agrio Formation, at the Cuesta del Chihuido section, southern Mendoza Province (35º45'S/69º34'W), Argentina, is presented. Thirty seven species of nannofossils, thirty four of foraminifers and si...
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Fernando Enrique Lopez,Cintia Kaufmann
Pág. 201 - 216
New data and a biostratigraphic review on Silurian graptolites of the La Chilca Formation are presented. Silurian retiolitids and monoserial graptolites are described for the first time in the lower layers of the Salto Macho Member at the Poblete Norte s...
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Veronica V. Vennari,Pamela P. Alvarez,Beatriz Aguirre-Urreta
Pág. 92 - 105
A new ammonoid species of the Andean endemic genus Andiceras Krantz is here described from upper Tithonian-lower Berriasian levels of the Vaca Muerta and Chachao Formations of the Mendoza Group, in north-western Mendoza Province, Argentina. Andiceras pla...
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Luis A. Spalletti,Horacio Parent,Gonzalo D. Veiga,Ernesto Schwarz
Pág. 464 - 481
This paper deals with the stratigraphy, the systematics of the ammonitefaunas and the biostratigraphy of the Cuyo Group in the Sierra de Reyes (southern Mendoza Province, Argentina). The230 m-thick marine siliciclastic succession of the Cuyo Group is com...
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Marcelo A. Reguero,Paula V. Castro
Pág. 45 - 64
Una mandíbula incompleta de un Trachytheriinae de Edad deseadense recolectada por Carlos Ameghino en Cabeza Blanca, Provincia de Chubut, Argentina, es asignada a Anatrachytherus soria gen et sp. nov. Florentino Ameghino la ilustró, refiriéndola a Trachyt...
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