Common stingray
... that Pliny the Elder claimed that the toxic spine of the Common stingray could kill trees and corrode iron?
... that <a href="./Pliny_the_Elder" id="mwE_0" rel="mw:WikiLink" title="Pliny the Elder">Pliny the Elder</a> claimed that the toxic <a href="./Spine_(zoology)" id="mwE_4" rel="mw:WikiLink" title="Spine (zoology)">spine</a> of the <b id="mwE_8"><a href="./Common_stingray" id="mwFAA" rel="mw:WikiLink" title="Common stingray">Common stingray</a></b> could kill trees and corrode iron?