Through the study of conodonts, strata around the Frasnian-Famennian boundary in the Compte section were analyzed in detail. Twenty-four samples in a 12 m thick sequence yielded 13 species of conodonts belonging to Ancyrodella, Ancyrognathus, Icriodus, Palmatolepis, and Polygnathus. Besides conodonts, other groups such as foraminifers, radiolarians, brachiopods, ostracods and crinoids were also found in the sequence. The conodont record, shows the FZ13, from the uppermost Frasnian, and the minuta and crepida zones from the lower Famennian. The last Frasnian fossil was obtained from Bed 92b and the fi rst Famennian fossil was from Bed 92d, which are separated by about 45 cm. Thus, between these two samples, the lowest three Famennian conodont zones have to be represented or missing. The absence of any stratigraphic hiatus between these levels suggests that extreme condensation took place in the early Famennian in the CP section.Resumen: Mediante el estudio de conodontos, se analizan en detalle los estratos en las proximidades del límite Frasniense-Fameniense en la sección Compte. En los 12 m estudiados se tomaron 24 muestras que han proporcionado 13 especies de conodontos pertenecientes a Ancyrodella, Ancyrognathus, Icriodus, Palmatolepis y Polygnathus. Además de los conodontos, se han registrado otros grupos de microfósiles como foraminíferos, radiolarios, braquiópodos, ostrácodos y crinoideos. El registro de conodontos indica la presencia de la FZ13, del Frasniense terminal, y las Zonas minuta y crepida, del Fameniense inferior. La última muestra con conodontos frasnienses es la CP/92b y la primera con conodontos famenienses las CP/92d. Ambas nuestras están separadas por unos 45 cm. Por tanto, entre ambas muestras se deben de situar las tres primeras zonas de conodontos del Fameniense, o están ausentes. Dado que no se ha observado ningún hiato estratigráfi co en esta parte de la sección, se interpreta una condensación extraordinaria en el comienzo del Fameniense en la sección CP.
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