A map showing the spread of <a href="https://en.wikipedia.org/wiki/Shell_tempered_pottery" class="extiw" title="en:Shell tempered pottery">shell tempering</a> in <a href="https://en.wikipedia.org/wiki/Mississippian_culture" class="extiw" title="en:Mississippian culture">Mississippian culture</a> ceramics on the US Gulf Coast from 1100 to 1650 CE. Blue field to the left represents the <a href="https://en.wikipedia.org/wiki/Plaquemine_Mississippian_culture" class="extiw" title="en:Plaquemine Mississippian culture">Plaquemine Mississippian culture</a> area and the red field represents the <a href="https://en.wikipedia.org/wiki/Pensacola_culture" class="extiw" title="en:Pensacola culture">Pensacola culture</a> spread of shell tempering and purple where they overlap. Important sites marked include the <a href="https://en.wikipedia.org/wiki/Holly_Bluff_Site" class="extiw" title="en:Holly Bluff Site">Holly Bluff Site</a>, <a href="https://en.wikipedia.org/wiki/Moundville_Archaeological_Site" class="extiw" title="en:Moundville Archaeological Site">Moundville Archaeological Site</a>, <a href="https://en.wikipedia.org/wiki/Bottle_Creek_Indian_Mounds" class="extiw" title="en:Bottle Creek Indian Mounds">Bottle Creek Indian Mounds</a>, and <a href="https://en.wikipedia.org/wiki/Fort_Walton_Mound" class="extiw" title="en:Fort Walton Mound">Fort Walton Mound</a>.<sup id="cite_ref-WEINSTEIN2008_1-0" class="reference"><a href="#cite_note-WEINSTEIN2008-1">[1]</a></sup>
<a href="//commons.wikimedia.org/wiki/User:Heironymous_Rowe" title="User:Heironymous Rowe">Heironymous Rowe</a>
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