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http://hdl.handle.net/2183/5996 Descubrimiento de Graptolitos areginienses en la escama de Rioseco (Zona Cantábrica, N. de España)
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Gutiérrez Marco, J. C.
Rodríguez, L.
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Cadernos do Laboratorio Xeolóxico de Laxe, 1987, 11: 209-220 ISSN: 0213-4497
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Abstract
[Resumen] En este trabajo se da a conocer el hallazgo de Azygograptus undulatus CHEN y XIA en un tramo pelítico-arenoso situado por encima de la Cuar,ita de Barrios s.str. dentro de la escama de Rioseco, que se equipara convencionalmente a la «serie de transición» de otras localidades asturianas. La especie mencionada permite atribuir al Arenig estos niveles, siendo la primera vez que se registra su presencia fuera de China.
[Abstract] Graptolites have been collected for the first time from the «transitional beds» overlying the Barrios Formation (=.Armorican Quartzite) in a single locality of eastern Asturias (N. Spain), within the Cantabrian zone of the Hesperian Massif (fig. 1). The studied material pertains to a dichograptid species with singlestiped rhabdosome and distinctive prothecal folds (fig. 2). It has been identified and described as Azygograptus undulatus CHEN & XIA, constituting thus the first report of this species outside China.
[Abstract] Graptolites have been collected for the first time from the «transitional beds» overlying the Barrios Formation (=.Armorican Quartzite) in a single locality of eastern Asturias (N. Spain), within the Cantabrian zone of the Hesperian Massif (fig. 1). The studied material pertains to a dichograptid species with singlestiped rhabdosome and distinctive prothecal folds (fig. 2). It has been identified and described as Azygograptus undulatus CHEN & XIA, constituting thus the first report of this species outside China.