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This study was partially funded by the Fundação para a Ciência e Tecnologia (FCT) through FEDER (European Regional Development Fund) and COMPETE for 2020 (Operational Programme for Competitiveness and Internationalization) funds; project UID/MAR/04292/2020—MARE (Marine and Environmental Sciences Centre); and a sabbatical grant (ref. SFRH/BSAB/150395/2019) for PPC (Programa Operacional Capital Humano). This work is a contribution of the Primeros pobladores y Patrimonio Arqueológico del Valle del Ebro Aragon Research Group (Government and European Regional Development Fund) and Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA). The project FINICES-PID2020-117685GB-I00 partially funded this study for RMC (University of Castilla–La Mancha, Spain). VT acknowledges a research grant (AM079-AND-2019) funded by the government of Andorra.