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Ameghiniana
versão On-line ISSN 1851-8044
Resumo
MESTRE, Ana. First conodonts from the Tambolar Formation (Pachaco Facies), Silurian of the Argentine Precordillera, and their biostratigraphic implications. Ameghiniana [online]. 2009, vol.46, n.3, pp.469-479. ISSN 1851-8044.
The present contribution deals with the first late Silurian conodonts recovered from the Tambolar Formation (Pachaco Facies), Central Precordillera. This conodont association suggests a late Ludfordian-early Pridoli age (Late Silurian) and is composed of Zieglerodina? cf. zellmeri Carls, Slavik y Valenzuela-Ríos, 2007; Dapsilodus obliquicostatus (Branson and Mehl, 1933), Wurmiella cf. excavata (Branson and Mehl), Delotaxis cf. elegans (Walliser, 1964) and Belodella sp., which are described and illustrated in this paper. This association and especially the presence of Zieglerodina? cf. zellmeri suggests a early Pridoli age (Late Silurian) for these deposits.
Palavras-chave : Conodonts; Silurian; Pridoli; Bioestratigraphy; Precordillera.