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<p>Dear Bonetoolers,</p>
<p>I am studying a very interesting ensemble from a Chalcolithic funerary structure from the southwest Spain. The typology of the objects is varied (small figurines of zoomorphs, perforated disks, pins, rings...). We also have lots of fragments of proboscidean ivory (fragments of the unworked tusk). Lots of the objects are made of ivory, others of bone, but we have some doubts about the raw material of some of the artefacts. I would like to ask you for your help to identify the raw material, or if you could give me any clue. I would like to show you as well some structural features I've never seen before, if someone could explain me the origin of them :)</p>
<p>Some of the perforated disks are made of proboscidean ivory, but in those that are entire I cannot be sure of the raw material because they have a strongly worked surface. I would like to show you the features I have found in one of them (files attached) and here the questions: Why we see in this naturally separated tangential profile this kind of "waves" and an undulating surface? In this natural separation I expected to find adjacent "lines" (like in Virág, 2012: 1413, fig.6, and as I have documented in other ivory objects). Have you parallels of this perforated disks in Chalcolithic contexts (or Neolithic or Bronze Age)?</p>
<p>In the images called unknown 1 and 1.1, will you say this is ivory? (Is another object, maybe a small handle, with a perforation with "something" inside)</p>
<p>And the last question. In the photos schreger-cementum, do you think the layer without Schreger and more "grainy" texture could be the cementum?</p>
<p>Thank you so much for your help and suggestions, and sorry for so many questions....</p>
<p>Bests,</p>
<p>Miriam LT</p>
<p>PD. Virag, A. (2012) Histogenesis of the Unique Morphology of Proboscidean Ivory. <em>Journal of morphology </em>273: 1406-1423.</p>
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<pre><span style="font-size: small;"><span style="color: #3366ff; font-family: andale mono,times;">Miriam Luciañez Triviño</span><br /><span style="font-family: andale mono,times;">Contrato Predoctoral del Gobierno Vasco<br /><br />Departamento de Prehistoria y Arqueología<br />Universidad de Sevilla<br />María de Padilla s/n. 41004. Sevilla. Spain<br />Phone: (34) 954 556906<br />Fax: (34) 954 559920<br /><br />E-mail: mlucianez@us.es<br />http://www.departamento.us.es/dpreyarq/web<br />http://www.grupo.us.es/atlas</span></span></pre>
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