today I review the post 3D PDF for archaeology, which had a broken link to the PDF file. The link is now restored (I took the time to check the data). If you download the PDF file and open it with Adobe Acrobat Reader 9 (we still did not find an open source pdf reader able to visualiza u3d data), this is what you should see:
Sorry for the slow clip, but I had to virtualize Windows in ArcheOS (within Virtual Box) and the u3d file of the skull is too heavy to create a light 3D PDF file (it was just a first test).
I would like to thank the people who noticed the broken link. Their report was very helpful in reviewing ATOR old posts!