“…The Las Llacerias section is correlated with the Gamonedo-Cabrales depositional sequences, a correlation that has been undertaken now through the combined use of sedimentological data and fusulinoidean biostratigraphy. Attempts to characterize the Moscovian/Kasimovian boundary led to a number of publications on the fossil content of the Las Llacerias section, in which data from several paleontological groups (algae, brachiopods, conodonts, corals, foraminifers, spores) have been documented (Marquí-nez et al 1982;Villa et al 1993Coquel and Rodríguez 1994;van Ginkel and Villa 1999;Villa and van Ginkel 2000;Méndez 2002Méndez , 2006Mamet and Villa 2004). However, fusulinoideans, generally considered as bearing a great stratigraphic signiWcance, were the only previously analysed foraminifers, whereas the presence of smaller foraminifers was virtually neglected.…”