Producción CyT
Congreso
Autoría
Mestre, A.
Fecha
2013
Editorial y Lugar de Edición
Asociación Paleontológica Argentina
ISSN
0328-347X
Resumen
Información suministrada por el agente en
SIGEVA
THE top of the San Juan Formation in Villicúm range haslong been described and discussed to emphasis usually beingplaced on stratigraphy and macrofossils (Baldis and Beresi,1981; Sánchez et al.,1996; Peralta and Beresi, 1999; Krögeret al., 2007).Sarmiento (1985, 1987) represented the first contributionson conodont biostratigraphy of the San Juan and Los Azulesformations in Don Braulio and La Pola creeks, where sherecognized the "Amorphognathus variabilis-Eoplacognathusps...
THE top of the San Juan Formation in Villicúm range haslong been described and discussed to emphasis usually beingplaced on stratigraphy and macrofossils (Baldis and Beresi,1981; Sánchez et al.,1996; Peralta and Beresi, 1999; Krögeret al., 2007).Sarmiento (1985, 1987) represented the first contributionson conodont biostratigraphy of the San Juan and Los Azulesformations in Don Braulio and La Pola creeks, where sherecognized the "Amorphognathus variabilis-Eoplacognathuspseudoplanus"Zone. Subsequently, Sarmiento (1990, 1991) reviewedthis conodont fauna and recorded the E. suecicus Zone for theselevels.Recently, Heredia and Mestre (2011) proposed a new biostratigraphicchart for the Precordillera, documenting theLenodus variabilis Zone, Yangtzeplacognathus crassus Zone, Eoplacognathuspseudoplanus Zone and Eoplacognathus suecicusZone, that confirm the close connection with those of Balticaand South-Central China.The present work is an early contribution about records ofthe conodont fauna of Villicúm range in three sections such asDon Braulio, La Pola and Cecilia creeks (Fig. 1), proposing forfirst time in this sector of the Precordillera basin theYangtzeplacognathus crassus Zone in the very top of San Juanand the base of Los Azules formations.
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Palabras Clave
BIOSTRATIGRAPHYCONODONTSPRECORDILLERADARRIWILIAN