10.1371/journal.pone.0176317.g004 Tammy Hodgskiss Tammy Hodgskiss Lyn Wadley Lyn Wadley Temporal variations of the percentages of pieces with clayey, silty or sandy grain sizes, in the utilized and unutilized earlier MSA ochre assemblages at Rose Cottage Cave. Public Library of Science 2017 pre-Howiesons Poort layers skin protection Rose Cottage surface modifications silty grain sizes sediment volume processing techniques post-Howiesons Poort layers Rubbing transfers utilization rate skin colouring Howiesons Poort layers Rose Cottage Cave piece Middle Stone Age MSA grain size 2017-04-26 17:42:59 Figure https://plos.figshare.com/articles/figure/Temporal_variations_of_the_percentages_of_pieces_with_clayey_silty_or_sandy_grain_sizes_in_the_utilized_and_unutilized_earlier_MSA_ochre_assemblages_at_Rose_Cottage_Cave_/4916012 <p>Temporal variations of the percentages of pieces with clayey, silty or sandy grain sizes, in the utilized and unutilized earlier MSA ochre assemblages at Rose Cottage Cave.</p>