tusk shells
...that tusk shells are a class of marine mollusks that resemble elephants' tusks, and were used by the natives of the Pacific Northwest as wampum?
...that <b id="mwAnI"><a href="./Tusk_shell" id="mwAnM" rel="mw:WikiLink" title="Tusk shell">tusk shells</a></b> are a <a href="./Class_(biology)" id="mwAnQ" rel="mw:WikiLink" title="Class (biology)">class</a> of marine <a class="mw-redirect" href="./Mollusk" id="mwAnU" rel="mw:WikiLink" title="Mollusk">mollusks</a> that resemble <a href="./Elephant" id="mwAnY" rel="mw:WikiLink" title="Elephant">elephants</a>' <a href="./Tusk" id="mwAnc" rel="mw:WikiLink" title="Tusk">tusks</a>, and were used by the <a class="mw-redirect mw-disambig" href="./Native_American" id="mwAng" rel="mw:WikiLink" title="Native American">natives</a> of the <a href="./Pacific_Northwest" id="mwAnk" rel="mw:WikiLink" title="Pacific Northwest">Pacific Northwest</a> as <a href="./Wampum" id="mwAno" rel="mw:WikiLink" title="Wampum">wampum</a>?