Moscovian conodonts from the the Nevandi River Valley (Cantabrian Zone, North Spain)

Abstract

Abstract : Taxonomic and biostratigraphic data concerning Moscovian conodont faunas are reported from a section in the Nevandi River Valley (North Spain). Idiognathodus and Idiognathoides are the dominant genera. Other genera recorded in the section are Declinognathodus, Gondolella , Neogondolella and Neognathodus . Many of the investigated conodonts are integrated by cosmopolitan species but two new taxa belonging to the genus Idiognathodus I. espinamaensis and I. mendezi are erected. The conodonts coming from the lower part and the upper part of the section are assigned to the lower Moscovian and upper Moscovian respectively. Keywords : conodonts, Moscovian, Carboniferous, Cantabrian Zone. Resumen : Se dan a conocer datos taxonomicos y biostratigraficos de conodontos moscovienses de una seccion del Valle del Rio Nevandi (norte de Espana). La mayor parte de dichos fosiles son elementos P1 con Idiognathodus e Idiognathoides como generos dominantes. Otros generos registrados son Declinognathodus,Gondolella , Neogondolella y Neognathodus . Muchos de los elementos investigados estan integrados por especies cosmopolitas pero se crean dos nuevos taxones pertenecientes al genero Idiognathodus : I. espinamaensis e I. mendezi . Los conodontos encontrados en la parte inferior y superior de la sucesion se asignan al Moscoviense inferior y superior respectivamente. Palabras clave : conodontos, Moscoviense, Carbonifero, Zona Cantabrica.