<div dir="ltr">these are sea urchin spines. The common name for these thick spines is "pencils."<div><br></div><div>they are sometimes used in jewelry.</div><div><br></div><div>Jean DeMouthe</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 18, 2016 at 2:19 PM, Jennifer Pietarila <span dir="ltr"><<a href="mailto:jen320@gwmail.gwu.edu" target="_blank">jen320@gwmail.gwu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Hello!<br><br></div>I have two pendants in the collection where I work and we are trying to figure out what material they are made of. These pendants were found in Eastern Washington as part of an archaeological survey. The records indicate that they were identified as dinosaur teeth, specifically Diplodocus. <br><br>As I'm not an expert in the identification of dinosaur specific materials, I was wondering if someone could shed some light on these mystery pendants. <br><br>Each piece has smooth micro grooves running longitudinally along the surface, three pinched ridges at the crown, and a circular groove at the root. I am not sure if the groove is natural or man-made. They are over 2 inches in length (6.5 cm). I have attached a few pictures as examples. <br><br></div>Thanks!<span class="HOEnZb"><font color="#888888"><br><br></font></span></div><span class="HOEnZb"><font color="#888888">Jennifer <br></font></span></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><font face="comic sans ms, sans-serif" color="#38761d"><i>Dr. Jean F. DeMouthe</i></font><div><font face="comic sans ms, sans-serif" color="#38761d"><i>Senior Collections Manager for Geology</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>California Academy of Sciences</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>55 Music Concourse Drive</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>Golden Gate Park</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>San Francisco, CA 94118</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>phone: 415-379-5258</i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i>email: <a href="mailto:jdemouthe@calacademy.org" target="_blank">jdemouthe@calacademy.org</a></i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i><br></i></font></div><div><font face="comic sans ms, sans-serif" color="#38761d"><i><br></i></font></div><div><font face="comic sans ms, sans-serif" color="#660000"><i>I like nonsense; it wakes up the brain cells.</i></font></div><div><font face="comic sans ms, sans-serif" color="#660000"><i>-Dr. Seuss</i></font></div><div><font face="comic sans ms, sans-serif"><i><br></i></font></div><div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><br></blockquote><span style="color:rgb(0,0,0);font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:14px;line-height:20px"><br></span><font face="comic sans ms, sans-serif"><i><br></i></font></div></div></div>
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