I am trying to find out how to tell the species Perotrochus indicus and
P. teramachii apart definitively.  One is super-rare and expensive and
the other is very available and affordable.  Both are purported to occur
in the Andaman Sea, and they both look "suspiciously similar".  Hence,
it is very imporant for perspective purchasers to be able to reliably
differentiate the two.  Any takers?

- ross mayhew.

http://www.schnr-specimen-shells.com/

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