Ordovician Conodont Biostratigraphy of the Ponón Trehué Formation, San Rafael Block, Mendoza, Argentina

HEREDIA, S.; MESTRE, A.

The Pre-Carboniferous Geological Evolution of the San Rafael Block, Western Argentina: Paleogeographic implications in the Proto-Andean Gondwana Margin.

India Chennai

Lugar: Springer Nature; Año: 2017; p. 75 - 86

A review of the Middle Ordovician conodont fauna of the southern sector of the Ponón Trehué Creek,Mendoza Province, Argentina, is presented in this contribution. Different genera and species of conodontswere recovered from clastic?carbonate beds from the Ponón Trehué Formation. Two conodont zones andseveral subzones have been proposed for these outcrops, the Pygodus serra Zone with the E. robustus andE. lindstroemi Subzones, and the Pygodus anserinus Zone. An evaluation of conodont assemblagespresent in the last mentioned biozone allowed us recognizing two informal subzones.