| http://www.w3.org/ns/prov#value | - The millions of mussel shells discarded in prehistory helped preserve many otherwise perishable artifacts made from bone and antler.Figure 52: Middle to Late Archaic period atlatl weights of schist and rose quartz.Highly decorative carved bone pins, pendants, gorgets, bone awls and other tools are commonly preserved in the shell mounds and the drier sediments in the shelters of the region (Figures
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