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Hi, try eagle ray (or similar) pavement teeth. SH-D ArchaeoZoology http://www.shd-archzoo.co.uk On 02/08/2017 21:08, Jo Osborn wrote: > Hi all, > > Hoping for some help on an ID here, so far my usual sources have come > up empty. We have a good number of these coming from a site next to > the beach in south-central Peru. They're flat on one side, which is > long and slightly hexagonal, and the otherside has a comb-like structure. > Several have been articulated making us think they're some kind of > plating, but our first guess (chiton) didn't seem to pan out when > compared to local species. However, it's totally possible I'm wrong on > that and someone will better chiton knowledge can steer me straight. > Any suggestions would be much appreciated. > > http://zooarchaeology.ning.com/photo/albums/unid-specimens