COMMENTS ON NIELSEN’S REVIEW OF MOLLUSK SHELLS AS BIO-GEO-ARCHIVES. EVALUATING ENVIRONMENTAL CHANGES DURING THE QUATERNARY. Sandra Gordillo, María Sol Bayer, Gabriella Boretto and Melisa Charó. 2013. Springer, Germany, ISBN 978-3-319-03476-8. AMGH 2014, 51 (3), 267.