Help with Ancient Maya Offering Shells

[jamesdoyle1]

Hello, everyone!

I work for an archaeological project that discovered a rich Classic Maya (ca. 250-900 AD) tomb with lots of imported seashells (Oliva, Spondylus spp.).

In another part of the site, we discovered an offering that had some very different shells, some of which are proving difficult for our malecologically-challenged team to identify.
Four photos here: <!-- m --><a class="postlink" href="http://proteus.brown.edu/landscapesuccession/8383">http://proteus.brown.edu/landscapesuccession/8383</a><!-- m -->

Any help with these four would be greatly appreciated! Thanks in advance.

Best,

James

P.S. More about the tomb here: <!-- m --><a class="postlink" href="http://news.nationalgeographic.com/news/2010/07/100721-maya-tomb-human-fingers-king-guatemala-science/">http://news.nationalgeographic.com/news ... a-science/</a><!-- m -->