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<p>[QUOTE=&quot;2manybooks, post: 10357713, member: 8267&quot;]Mammoth and modern elephant ivories can be distinguished by the intersecting angles of the schreger lines. &quot;Elephant Schreger lines cross at an angle greater than 115°. Mammoth Schreger lines cross at an angle less than 90°.&quot; </p><p><br /></p><p><a href="https://staff.royalbcmuseum.bc.ca/2016/10/24/ivory-identification/#:~:text=Elephant%20Schreger%20lines%20cross%20at,and%20Ivory%20Substitutes%20found%20here" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://staff.royalbcmuseum.bc.ca/2016/10/24/ivory-identification/#:~:text=Elephant%20Schreger%20lines%20cross%20at,and%20Ivory%20Substitutes%20found%20here" rel="nofollow">https://staff.royalbcmuseum.bc.ca/2016/10/24/ivory-identification/#:~:text=Elephant Schreger lines cross at,and Ivory Substitutes found here</a>.</p><p><br /></p><p>You can find more about measuring the angles here, page 10 -&nbsp; </p><p><br /></p><p><a href="https://cites.org/sites/default/files/eng/resources/pub/E-Ivory-guide.pdf" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://cites.org/sites/default/files/eng/resources/pub/E-Ivory-guide.pdf" rel="nofollow">https://cites.org/sites/default/files/eng/resources/pub/E-Ivory-guide.pdf</a>[/QUOTE]</p><p><br /></p>

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