Several days ago someone posted a question of what exactly is a mollusk.
Most of us know one when we see one, but what are the characters that we
use to delineate the phylum?  I recalled seeing a website that had some
useful information and finally found it again.  For those of you who would
like to see "What constitutes the Mollusks?", point your browsers to

http://www.biology.ualberta.ca/courses.hp/zool250/Clades/clade08-Mollusca.h
tm#mollusca

Regards,
Charlie