Artículos de revistas
The Ordovician genus Pygodus (conodont) in the Cuyania Terrane, Argentina
Fecha
2016-06Registro en:
Heredia, Susana Emma; Mestre García, Ana Isabel; Soria Pures, Tatiana Belén; Kaufmann, Cintia; The Ordovician genus Pygodus (conodont) in the Cuyania Terrane, Argentina; Cambridge University Press; Geological Magazine; 154; 05; 6-2016; 1105-1116
0016-7568
CONICET Digital
CONICET
Autor
Heredia, Susana Emma
Mestre García, Ana Isabel
Soria Pures, Tatiana Belén
Kaufmann, Cintia
Resumen
This contribution deals with the record of the Ordovician genus Pygodus in Cuyania, Argentina. Several classical sections have been sampled for conodonts in the Precordillera and the San Rafael Block, involving diverse sedimentary deposits: coarse clastic rocks with carbonate cement, carbonate beds intercalated in fine clastic deposits, green shale, and black carbonate deposits. The recovered species of this genus are Pygodus lunnensis Zhang, P. anitae Bergström, P. serra (Hadding), P. protoanserinus Zhang and P. anserinus Lamont & Lindström. These key conodonts indicate middle to upper Darriwilian – lower Sandbian age for the bearing strata. The species P. protoanserinus is recorded for the first time from the Precordillera. Detailed observations were made on specimens of P. anitae, P. lunnensis and P. protoanserinus; the two last species are described for the first time from Cuyania.