10.6084/m9.figshare.91281.v1 Emma Versteegh Emma Versteegh Hollands Diep 1938 - Moerdijk - Unio shell.tif figshare 2012 shell freshwater mussels Paleoclimatology Ecology 2012-11-23 10:08:11 Figure https://figshare.com/articles/figure/Hollands_Diep_1938_-_Moerdijk_-_Unio_shell_tif/91281 <p><em>Unio tumidus</em> collected from the Hollands Diep in 1938.</p>