Artículos de revistas
Middle Ordovician (early Dapingian) conodonts in the Central Andean Basin of NW Argentina
Fecha
2013-07Registro en:
Carlorosi, Josefina Maria Teresa; Heredia, Susana Emma; Aceñolaza, Guillermo Federico; Middle Ordovician (early Dapingian) conodonts in the Central Andean Basin of NW Argentina; Taylor & Francis Ltd; Alcheringa; 37; 3; 7-2013; 1-13
0311-5518
Autor
Carlorosi, Josefina Maria Teresa
Heredia, Susana Emma
Aceñolaza, Guillermo Federico
Resumen
This paper describes and analyzes the significance of a conodont fauna from the Alto del Cóndor Formation, exposed in the Los Colorados region of the Argentine Eastern Cordillera. Identified taxa are Baltoniodus triangularis, Baltoniodus sp. cf. B. triangularis, Drepanodus sp., Drepanoistodus basiovalis, Drepanoistodus sp. B., Erraticodon patu, Gothodus costulatus, Oistodus sp., Trapezognathus diprion, T. quadrangulum, Triangulodus sp. and Triangulodus? sp. The presence of Baltoniodus triangularis indicates the base of the Dapingian stage (Middle Ordovician). In addition, we report the coexistence of T. diprion and T. quadrangulum. The conodont association suggests a faunal affinity with Baltica and South China, both belonging to the Shallow-Sea Realm of the Temperate-Cold Domain.