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<p>[QUOTE=&quot;2manybooks, post: 5813009, member: 8267&quot;]Another option as to material is sperm whale tooth. The basic shape is similar, as well as other features. Sperm whale teeth grow in nested cones, which may be what is visible on the detail of the back of your figure. The base also looks more like sperm whale than walrus. I don&#039;t see the characteristic crystalline core of walrus tusk.</p><p><br /></p><p>Here are some photos of sectioned sperm whale tooth, highlighting the structures (the longitudinal section has been etched to better show the growth layers) - (Sorry, you will have to follow the links to see the images):</p><p><br /></p><p><img src="https://england.prm.ox.ac.uk/image-admin/d/2012-1/Sperm%20whale%20teeth%20slides.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><a href="https://england.prm.ox.ac.uk/englishness-Scrimshaw-at-the-PRM.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://england.prm.ox.ac.uk/englishness-Scrimshaw-at-the-PRM.html" rel="nofollow">https://england.prm.ox.ac.uk/englishness-Scrimshaw-at-the-PRM.html</a></p><p><br /></p><p><img src="https://www.researchgate.net/publication/260907789/figure/fig1/AS:392515774631938@1470594461420/a-and-1b-Sections-of-sperm-whale-teetch-etched-with-15-formic-acid-showing-clear.png" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><a href="https://www.researchgate.net/figure/a-and-1b-Sections-of-sperm-whale-teetch-etched-with-15-formic-acid-showing-clear_fig1_260907789" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.researchgate.net/figure/a-and-1b-Sections-of-sperm-whale-teetch-etched-with-15-formic-acid-showing-clear_fig1_260907789" rel="nofollow">https://www.researchgate.net/figure/a-and-1b-Sections-of-sperm-whale-teetch-etched-with-15-formic-acid-showing-clear_fig1_260907789</a>[/QUOTE]</p><p><br /></p>

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