I raised this question a few years ago to see if the Conch-Lers could come
to a consensus.  They could not.  However, most responses centered around up
to 10mm or 1/2" for the normal, fully mature species.

You might try an archive search.

Marlo


-----Original Message-----
From: Conchologists List [mailto:[log in to unmask]] On Behalf Of
Marcus Coltro
Sent: Wednesday, March 22, 2006 3:19 PM
To: [log in to unmask]
Subject: Micro Shells

Easy!

Micro shells can be any size when

If you are short-sighted the shell touches your eye-brown before you can see
it;

If you are far-sighted your arm is not long enough to see it!

Marcus



Marcus Coltro
WWW.FEMORALE.COM

---- "Monfils wrote:
 > Which raises a question -  just what size is the upper limit for a "micro
 > shell"?  I hear various opinions - 3 mm, 5 mm, 6 mm, 10 mm -  I realize
 > there is no objective hard and fast rule, but what are people's opinions
on
 > this, and why?

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