Message:

<p>[QUOTE=&quot;Hollyblue, post: 347609, member: 1496&quot;]They can be measured ... but they can also be very close to the same.</p><p><br /></p><p><i><b>Because specimens from both extinct and extant sources may present angles between 90 degrees and 115 degrees in the outer Schreger pattern area, the differentiation of mammoth from elephant ivory should never be based upon single angle measurements when the angles fall in this range.</b></i></p><p><b><i><br /></i></b></p><p><b><i><i>When averages are used to represent the angles in the individual samples, a clear separation between extinct and extant proboscideans is observed. All the elephant samples had averages above 100 degrees, and all the extinct proboscideans had angle averages below 100 degrees.</i></i></b></p><p><b><br /></b></p><p><a href="https://www.fws.gov/lab/ivory_natural.php" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.fws.gov/lab/ivory_natural.php" rel="nofollow">https://www.fws.gov/lab/ivory_natural.php</a>[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in